Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th

Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th
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1 Answer

Answer :

Total number of books = 700 (i) P(no defective books) = 400 / 700 = 4 / 7 (ii) P(more than 0 but less than 4 defective books) = 269 / 700 (iii) P(more than 4 defective books) = 13 / 700
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Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th

Description : Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th

Last Answer : Total number of books = 700 (i) P(no defective books) = 400 / 700 = 4 / 7 (ii) P(more than 0 but less than 4 defective books) = 269 / 700 (iii) P(more than 4 defective books) = 13 / 700

Bulbs are packed in cartons each containing 40 bulbs. -Maths 9th

Description : Bulbs are packed in cartons each containing 40 bulbs. -Maths 9th

Last Answer : (i) P (a carton has no defective bulb) = 400/700 = 4/7 (ii) P (defective bulbs from 2 to 6) = P (2 defective bulbs) + P (3 defective bulbs) + P (4 defective bulbs) + P (5 defective bulbs) + P (6 ... + P (2 defective bulbs) + P (3 defective bulbs) = 400/700 + 180/700 + 48/700 + 41/700 = 669/700

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Description : Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Last Answer : (i) Frequency distribution table (ii) From the above frequency distribution table, we observe that number of children in the class - interval 15 - 20 is 2. So, 2 children view television for 15 hours or more than 15 hours a week .

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Description : Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Last Answer : (i) Frequency distribution table (ii) From the above frequency distribution table, we observe that number of children in the class - interval 15 - 20 is 2. So, 2 children view television for 15 hours or more than 15 hours a week .

Metal spheres, each of radius 2 cm, are packed into a rectangular box of internal dimensions 16 cm x 8 cm x 8 cm. -Maths 9th

Description : Metal spheres, each of radius 2 cm, are packed into a rectangular box of internal dimensions 16 cm x 8 cm x 8 cm. -Maths 9th

Last Answer : Volume of rectangular box=lbh=16(64)=1024cm3 Volume of sphere=34​πr3=33.5238cm3 16 sphere=16(33.5238)=536.3808 Volume of liquid=1024−536.3808=488cm3

Metal spheres, each of radius 2 cm, are packed into a rectangular box of internal dimensions 16 cm x 8 cm x 8 cm. -Maths 9th

Description : Metal spheres, each of radius 2 cm, are packed into a rectangular box of internal dimensions 16 cm x 8 cm x 8 cm. -Maths 9th

Last Answer : According to question find the volume of this liquid.

Thirty children were asked about the number -Maths 9th

Description : Thirty children were asked about the number -Maths 9th

Last Answer : The frequency distribution of above data in tabular form is given as: (ii) Two children watched television for 15 or more hours a week.

An article manufactured by a company consists of two parts X and Y. In the process of manufacture of the part X, 9 out of 100 parts may be defective. -Maths 9th

Description : An article manufactured by a company consists of two parts X and Y. In the process of manufacture of the part X, 9 out of 100 parts may be defective. -Maths 9th

Last Answer : (b) \(rac{1}{4}\)Since A and B are mutually exclusive and exhaustive events, therefore, P(A ∩ B) = 0, P(A ∪ B) = 1 We know that, P(A ∪ B) = P(A) + P(B) - P(A ∩ B) ⇒ 1 = P(A) + 3 P(A) (Given P(B) ... ∵ P(A) + P(B) = 1)⇒ P(\(\bar{B}\)) = 1 - P(B) = 1 - \(rac{3}{4}\) = \(rac{1}{4}\).

Final duties of the HAS before quitting office a) Should carefully examine each sorting compartment to see that no article are left in it unsorted b) The sweeping, used labels, broken seal etc are personally examined c) The articles of stationary, stamps, seals and books etc are carefully placed in the portfolio. d) All the above

Description : Final duties of the HAS before quitting office a) Should carefully examine each sorting compartment to see that no article are left in it unsorted b) The sweeping, used labels, broken seal etc are ... stationary, stamps, seals and books etc are carefully placed in the portfolio. d) All the above

Last Answer : d) All the above

If from each of the three boxes containing 3 blue and 1 red balls, 2 blue and 2 red balls, -Maths 9th

Description : If from each of the three boxes containing 3 blue and 1 red balls, 2 blue and 2 red balls, -Maths 9th

Last Answer : (a) \(rac{13}{32}\)The three boxes B1, B2 and B2 contain the different coloured balls as follows :BlueRedBox 131Box 222Box 313There can be three mutually exclusive cases of drawing 2 blue balls and 1 red balls in the ways as given :Box ... {64}\) + \(rac{2}{64}\) = \(rac{26}{64}\) = \(rac{13}{32}\).

Will and Jim were practicing shooting, and each scored seventy-five hits out of a hundred. After a little break, Will tried again and hit thirty-five out of fifty shots. Jim did not do any more shooting. Who had the best average for the day? -Riddles

Description : Will and Jim were practicing shooting, and each scored seventy-five hits out of a hundred. After a little break, Will tried again and hit thirty-five out of fifty shots. Jim did not do any more shooting. Who had the best average for the day? -Riddles

Last Answer : Jim's average is higher.

Place three piles of matches on a table, one with 11 matches, the second with 7, and the third with 6. You are to move matches so that each pile holds 8 matches. You may add to any pile only as many matches as it already contains. All the matches must come from one other pile. For example, if a pile holds 6 matches, you may add 6 to it, no more or less. You have three moves. -Riddles

Description : Place three piles of matches on a table, one with 11 matches, the second with 7, and the third with 6. You are to move matches so that each pile holds 8 matches. You may add to any pile only as many ... a pile holds 6 matches, you may add 6 to it, no more or less. You have three moves. -Riddles

Last Answer : First pile to second; second to third; third to first:Pile Initial number First move Second move Third move First1111-7=444+4=8Second77+7=1414-6=88Third666+6=1212-4=8

Lushkoff is earning thirty five roubles a month. How is he obliged to Sergei for this? -English 9th

Description : Lushkoff is earning thirty five roubles a month. How is he obliged to Sergei for this? -English 9th

Last Answer : Sergei played very important role in improving the condition of the beggar. It was because of Sergei that Lushkoff could earn thirty five roubles a month. He offered him the job to chop wood at his ... job of copying. Lushkoff was highly obliged to Sergei because now he was a notary because of him.

Show that the relation R in the set A of all the books in a library of a school given by R = {(x, y): x and -Maths 9th

Description : Show that the relation R in the set A of all the books in a library of a school given by R = {(x, y): x and -Maths 9th

Last Answer : Given: A = {All books in a library of a school} R = {(x, y): x and y have the same number of pages} Reflexivity: (x, x) ∈ R ⇒ R is reflexive on A Symmetric: Since books x and y have the same number of pages ... and (y, z) ∈ R ⇒ (x, z) ∈ R ⇒ R is transitive on A. Hence, R is an equivalence relation.

A family spends ₹500 monthly as a fixed amount on milk and extra milk costs ₹ 20 per kg. Taking quantity of extra milk as x and total expenditure on milk as y. Write a linear equation and fill the table. -Maths 9th

Description : A family spends ₹500 monthly as a fixed amount on milk and extra milk costs ₹ 20 per kg. Taking quantity of extra milk as x and total expenditure on milk as y. Write a linear equation and fill the table. -Maths 9th

Last Answer : Solution :-

The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. -Maths 9th

Description : The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. -Maths 9th

Last Answer : NEED ANSWER

The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. -Maths 9th

Description : The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. -Maths 9th

Last Answer : (c) Let x and y be the upper and lower class limit of frequency distribution. Given, width of the class = 5 ⇒ x-y= 5 (i) Also, given lower class (y) = 10 On putting y = 10 in Eq. (i), we get ... 20-25, 25-30 and 30-35. Thus, the highest class is 30-35, Hence, the upper limit of this class is 35.

Five balls of different colours are to be placed in three boxes of different sizes. Each box can hold all five. In how many different ways -Maths 9th

Description : Five balls of different colours are to be placed in three boxes of different sizes. Each box can hold all five. In how many different ways -Maths 9th

Last Answer : According to the question, we have 5 balls to be placed in 3 boxes where no box remains emptyHence, we can have the following kinds of distribution firstly, where the distribution will be (3,1,1) that is, one box gets three ... go in second box is = 4 C 2 . Total no. of ways =90 Total:60+90=150.

Hari has some two rupee and five rupee coins .The total amount with him is rs. 43. Express the given information as a linear equation in two variables. -Maths 9th

Description : Hari has some two rupee and five rupee coins .The total amount with him is rs. 43. Express the given information as a linear equation in two variables. -Maths 9th

Last Answer : answer:

The figure given besides shows five squares inside one another by joining the midpoints of the outer square. -Maths 9th

Description : The figure given besides shows five squares inside one another by joining the midpoints of the outer square. -Maths 9th

Last Answer : (c) \(rac{31}{16}a^2.\)Side of the square I = a ∴ Area of square I = a2= \(\sqrt{rac{a^2}{16}+rac{a^2}{16}}\) = \(\sqrt{rac{2a^2}{16}}\) = \(rac{a}{2\sqrt2}\)∴ Sum of the areas of the five squares= a2 + \( ... = a2 \(\bigg[1+ rac{1}{2} + rac{1}{4}+rac{1}{8}+rac{1}{16}\bigg]\) = \(rac{31}{16}a^2.\)

Eighteen quests have to be seated, half on each side of a long table. Four particular guests desire to sit on one particular side and -Maths 9th

Description : Eighteen quests have to be seated, half on each side of a long table. Four particular guests desire to sit on one particular side and -Maths 9th

Last Answer : Since four particular guests want to sit on particular side and three others on the other side. So, we are left with 11 guests out of which we choose 5 for side A in ways and remaining 6 for ... of the table can be arranged among themselves in 9! Ways. Hence, the total number of arrangements =

The following table gives the pocket money (in Rs) given to children per day by their parents : Represent the data in the form of a histogram. -Maths 9th

Description : The following table gives the pocket money (in Rs) given to children per day by their parents : Represent the data in the form of a histogram. -Maths 9th

Last Answer : The required histogram is as below :

In a school marks obtained by 80 students are given in the table. Draw a histogram. Also, make frequency polygon. -Maths 9th

Description : In a school marks obtained by 80 students are given in the table. Draw a histogram. Also, make frequency polygon. -Maths 9th

Last Answer : Here, class size = 135 - 305 = 10 ∴ Lower limit of first class interval is 305 - 10 / 2 = 300 Upper limit of first class interval is 305 + 10 / 2 = 310 Thus, first class interval is 300 - 310 Required histogram and frequency polygon is given on the graph paper .

The given table shows the month of birth of 40 students of class IX of a particular section in a school. -Maths 9th

Description : The given table shows the month of birth of 40 students of class IX of a particular section in a school. -Maths 9th

Last Answer : (a) P (later half of the year) = 23 / 40 (b) P (month having 31 days) = 26 / 40 = 13 / 20 (c) P(month having 30 days) = 10 / 40 = 1 / 4

Plot the points (x, y) given by the following table. -Maths 9th

Description : Plot the points (x, y) given by the following table. -Maths 9th

Last Answer : On plotting the given points on the graph, we get the points P(2,4), Q(4,2) R (-3, 0), S (-2, 5), T (3, – 3)and O (0 0).

Plot the points (x, y) given by the following table. Use scale 1 cm= 0.25 unit. -Maths 9th

Description : Plot the points (x, y) given by the following table. Use scale 1 cm= 0.25 unit. -Maths 9th

Last Answer : Let X’OX and X’ OX be the coordinate axes. Plot the given points (1.25, -0.5), (0.25, 1), (1.5,1.5) and (-1.75, – 0.25) on the graph paper.

The following table gives the pocket money (in Rs) given to children per day by their parents : Represent the data in the form of a histogram. -Maths 9th

Description : The following table gives the pocket money (in Rs) given to children per day by their parents : Represent the data in the form of a histogram. -Maths 9th

Last Answer : The required histogram is as below :

In a school marks obtained by 80 students are given in the table. Draw a histogram. Also, make frequency polygon. -Maths 9th

Description : In a school marks obtained by 80 students are given in the table. Draw a histogram. Also, make frequency polygon. -Maths 9th

Last Answer : Here, class size = 135 - 305 = 10 ∴ Lower limit of first class interval is 305 - 10 / 2 = 300 Upper limit of first class interval is 305 + 10 / 2 = 310 Thus, first class interval is 300 - 310 Required histogram and frequency polygon is given on the graph paper .

The given table shows the month of birth of 40 students of class IX of a particular section in a school. -Maths 9th

Description : The given table shows the month of birth of 40 students of class IX of a particular section in a school. -Maths 9th

Last Answer : (a) P (later half of the year) = 23 / 40 (b) P (month having 31 days) = 26 / 40 = 13 / 20 (c) P(month having 30 days) = 10 / 40 = 1 / 4

Plot the points (x, y) given by the following table. -Maths 9th

Description : Plot the points (x, y) given by the following table. -Maths 9th

Last Answer : On plotting the given points on the graph, we get the points P(2,4), Q(4,2) R (-3, 0), S (-2, 5), T (3, – 3)and O (0 0).

Plot the points (x, y) given by the following table. Use scale 1 cm= 0.25 unit. -Maths 9th

Description : Plot the points (x, y) given by the following table. Use scale 1 cm= 0.25 unit. -Maths 9th

Last Answer : Let X’OX and X’ OX be the coordinate axes. Plot the given points (1.25, -0.5), (0.25, 1), (1.5,1.5) and (-1.75, – 0.25) on the graph paper.

A matchbox measures 4 cm×2.5cm×1.5cm. What will be the volume of a packet containing 12 such boxes? -Maths 9th

Description : A matchbox measures 4 cm×2.5cm×1.5cm. What will be the volume of a packet containing 12 such boxes? -Maths 9th

Last Answer : Dimensions of a matchbox (a cuboid) are l×b×h = 4 cm×2.5 cm×1.5 cm respectively Formula to find the volume of matchbox = l×b×h = (4×2.5×1.5) = 15 Volume of matchbox = 15 cm3 Now, volume of 12 such matchboxes = (15×12) cm3 = 180 cm3 Therefore, the volume of 12 matchboxes is 180cm3.

Two balls are drawn at random from a bag containing 3 white, 3 red, 4 green and 4 black balls, one by one without replacement. -Maths 9th

Description : Two balls are drawn at random from a bag containing 3 white, 3 red, 4 green and 4 black balls, one by one without replacement. -Maths 9th

Last Answer : Given, 3 white (3 W), 3 red (3 R), 4 green (4 G), 4 black (4 B) balls Total no. of balls = 3 + 3 + 4 + 4 = 14 Two balls are to be drawn, one by one without replacement. There are 4 possibilities.First BallSecond ... }{13}\) = \(rac{33+33+40+40}{14 imes13}\) = \(rac{146}{182}\) = \(rac{73}{91}.\)

If A is the area of the right angled triangle and b is one of the sides containing the right angle, then what is the length of the -Maths 9th

Description : If A is the area of the right angled triangle and b is one of the sides containing the right angle, then what is the length of the -Maths 9th

Last Answer : answer:

Should I trust packed sandwiches in cafes (containing pesto) stating they are suitable for vegetarians?

Description : Should I trust packed sandwiches in cafes (containing pesto) stating they are suitable for vegetarians?

Last Answer : I would trust it to be vegetarian but not vegan. Something with parmesan (or other cheese) would be generally considered vegetarian. I would not trust anything packaged to be vegan unless I knew the maker well and it was labeled as vegan.

Which of the following statements about the preparation and storage of blood components is/are true? A. Solutions containing citrate prevent coagulation by binding calcium. B. The shelf life of packed red blood cells preserved with CPDA-1 is approximately 35 days at 1؛ to 6؛ C. C. There are normal numbers of platelets in packed red blood cells stored at 1؛ to 6؛ C for more than 2 days. D. The storage lesion affecting refrigerated packed red blood cells includes development of acidosis, hyperkalemia, and decreased intracellular 2,3DPG (diphosphoglycerate).

Description : Which of the following statements about the preparation and storage of blood components is/are true? A. Solutions containing citrate prevent coagulation by binding calcium. B. The ... cells includes development of acidosis, hyperkalemia, and decreased intracellular 2,3DPG (diphosphoglycerate).

Last Answer : Answer: ABD DISCUSSION: After blood has been collected from a donor, it is anticoagulated with a solution containing citrate, which acts by binding calcium. Blood is then separated into its ... transfusion or produce effects other than those predicted based on the content of the unit of blood

Five girls were taken to the house of thirty -two people .

Description : Five girls were taken to the house of thirty -two people .

Last Answer : five girls = five fingers. Thirty-two people = 32 teeth one master Dida = tongue.

All the following statements about xeroderma pigmentosum are true except (A) It is a genetic disease (B) Its inheritance is autosomal dominant (C) uvr ABC excinuclease is defective in this disease (D) It results in multiple skin cancers

Description : All the following statements about xeroderma pigmentosum are true except (A) It is a genetic disease (B) Its inheritance is autosomal dominant (C) uvr ABC excinuclease is defective in this disease (D) It results in multiple skin cancers

Last Answer : Answer : B

Pick up the correct statement from the following: (A) The apparent error on reversal is twice the actual error (B) The correction may be made equal to half the observed discrepancy (C) The good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results (D) All the above

Description : Pick up the correct statement from the following: (A) The apparent error on reversal is twice the actual error (B) The correction may be made equal to half the observed discrepancy (C) The ... a defective instrument by reversing and taking the mean of two erroneous results (D) All the above

Last Answer : (D) All the above

The following shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e.

Description : The following shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e.

Last Answer : a) Select the letter which represents a metal. b) Select the letter which represents a noble gas. a) d b) c

Channelling in a packed tower results from the (A) High pressure drop (B) Maldistribution of liquid (C) Non-uniformity of packing (D) Both (B) and (C)

Description : Channelling in a packed tower results from the (A) High pressure drop (B) Maldistribution of liquid (C) Non-uniformity of packing (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

What is the difference between a dollar and a half and thirty five-cents? -Riddles

Description : What is the difference between a dollar and a half and thirty five-cents? -Riddles

Last Answer : Nothing. A dollar and a half is the same as thirty five-cents (nickels). But not the same as thirty-five cents.

What is nine and two hundred thirty five thousandths in decimal form?

Description : What is nine and two hundred thirty five thousandths in decimal form?

Last Answer : It is 9.235

What is the decimal number shows five and thirty nine hundreds?

Description : What is the decimal number shows five and thirty nine hundreds?

Last Answer : It is 5.39

What is thirty five percent of forty?

Description : What is thirty five percent of forty?

Last Answer : It is 14. First of all you have to work out what 1% of 40 is by dividing 40 by 100. Then to get 35% you multiply the answer by 35.(40/100)*35 = 14

What fraction is equal to thirty five percent?

Description : What fraction is equal to thirty five percent?

Last Answer : 35% as a fraction in its simplest form is 7/20

Pakistan State Bank started working on 1st July 1948 with the help of Rs: A. Thirty Millions B. Twenty Millions C. Thirty Five Millions D. None of these

Description : Pakistan State Bank started working on 1st July 1948 with the help of Rs: A. Thirty Millions B. Twenty Millions C. Thirty Five Millions D. None of these

Last Answer : ANSWER: A

Pakistan State Bank started working on 1st July 1948 with the help of Rs: A. Thirty Millions B. Twenty Millions C. Thirty Five Millions D. None of these

Description : Pakistan State Bank started working on 1st July 1948 with the help of Rs: A. Thirty Millions B. Twenty Millions C. Thirty Five Millions D. None of these

Last Answer : ANSWER: A

Presumption as to electronic records ______years old a) Thirty b) Twenty c) Ten d) Five

Description : Presumption as to electronic records ______years old a) Thirty b) Twenty c) Ten d) Five

Last Answer : d) Five

Any person prefer an appeal to Supreme court shall be deposited amount in prescribed manner a) Fifty percent of that amount b) Fifty thousand rupees c) Thirty five thousand rupees

Description : Any person prefer an appeal to Supreme court shall be deposited amount in  prescribed manner a) Fifty percent of that amount b) Fifty thousand rupees c) Thirty five thousand rupees

Last Answer : b) Fifty thousand rupees