A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

1 Answer

Answer :

Total number of nuts and bolts in the box = 150 + 50 = 200 Number of nuts and bolts rusted = 1 / 2 × 200 = 100 P(a rusted nut or bolt) = 100 / 200 = 1 / 2

Related questions

Description : A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

Last Answer : Total number of nuts and bolts in the box = 150 + 50 = 200 Number of nuts and bolts rusted = 1 / 2 × 200 = 100 P(a rusted nut or bolt) = 100 / 200 = 1 / 2

Description : A box of hardware contains nuts and bolts. The bolts account for 25 percent of the number of items in the box. What percentage are the bolts of the entire box. -Riddles

Last Answer : 20 percent. For example, there are 10 bolts. Since the number of bolts is 25 percent of the number of items, there must be 40 nuts. The total number of items = 10 bolts + 40 nuts = 50. So, 10/50 = 1/5 = 20%.

Description : A box contains 15bolts of which 5 are defective. If 5 bolts are selected at random from the box, what is the probability that at least one of them is defective? a) 91/143 b) 101/143 c) 111/143 d) 121/143 e) 131/143

Last Answer : Probability that at least one is defective = 1 – probability that none is defective Probability that none is defective = 10C5 / 15C5 = 12/143 Required Probability = 1-12/143 = 131/143 Answer: e)

Description : What is the seperation to nuts and bolts?

Last Answer : science

Description : Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making (A) Nuts (B) Bolts (C) Chisels

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Description : The process extensively used for making bolts and nuts is 1. Hot piercing 2. Extrusion 3. Cold peening 4. Cold heading

Last Answer : The process extensively used for making bolts and nuts is Cold heading

Description : A box contains 100 balls numbers from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability -Maths 9th

Last Answer : (d) \(rac{1}{4}\)The box contains 100 balls numbered from 1 to 100. Therefore, there are 50 even and 50 odd numbered balls. The sum of the three numbers drawn will be odd, if all three are odd or one is even and 2 are odd. ∴ Required probability = P(odd) × P(odd) × P(odd) + P(even) × P(odd) × P(odd)

Description : A box contains 5 different red and 6 different white balls. In how many ways can 6 balls be selected so that there are at least -Maths 9th

Last Answer : The selection of 6 balls, consisting of at least two balls of each color from 5 red and 6 white balls can be made in the following ways: Red balls (5) White balls(6) Number of ways 2 4 5 C 2 ​ × 6 C 4 ​ =150 3 3 5 C 3 ​ × 6 C 3 ​ =200 4 2 5 C 4 ​ × 6 C 2 ​ =75 Total 425

Description : The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150, the resulting mean will be -Maths 9th

Last Answer : NEED ANSWER

Description : The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150, the resulting mean will be -Maths 9th

Last Answer : Solution of this question

Description : Found a rusted, circular floor grate from the 1800's. What should I do with it?

Last Answer : Turn it into a wall hanging.

Description : A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the  ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2  MN/mm2 , the ... N/mm2 (B) 100 N/mm2 (C) 120 N/mm2 (D) 150 N/mm2 Answer: Option 

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Last Answer : Volume of water discharged through the pipe = Volume increase of the tank First, consider the pipe. Volume discharge through pipe = length breadth speed time Let the time taken to fill the tank to 3 m depth be t. ... the tank V=150 100 3 cu. m ⇒ V=450 100 Therefore, 450t=450 100 ⇒ t=100 hours

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Last Answer : Volume of a brick = 20 cm 6 cm 4 cm = 480 cm3. Water absorbed by one brick = (110 480)(110 480) cm3 = 48 cm3. Let x bricks be placed in the water. Then, x bricks absorb 48x cm3 of water. ... tank ⇒ 1281600 + 480xx - 48xx = 150 x 120 x 100 ⇒ 432xx = 1800000 - 1281600 = 518400 ⇒ xx = 1200.

Description : Write a story in about 150 words on the basis of following inputs. -Maths 9th

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Description : Fee for availing facility of box and post bag is combine is a) 150 per year and 50 per quarterly, b) 250 per year / 80 quarterly c) 100 per year / 50 quarterly d) None of these

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Description : Fee for availing post box facility is a) 150 per year and 50 per quarterly, b) 250 per year / 100 quarterly c) 100 per year / 50 quarterly d) None of these

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Description : There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be – 3.5. Find the mean of the given numbers. -Maths 9th

Last Answer : Let x be the mean of 50 numbers. ∴ sum of 50 numbers = 50x Since each number is subtracted from 53. According to question, we have 53 × 50 - 50x / 50 = - 3.5 ⇒ 2650 - 50x = -175 ⇒ 50x = 2825 ⇒ x = 2825 / 50 = 56.5

Description : There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be – 3.5. Find the mean of the given numbers. -Maths 9th

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Description : There are 50 numbers. Each number is subtracted from 53 and the mean of the number so obtained is found to be – 3.5. -Maths 9th

Last Answer : NEED ANSWER

Description : There are 50 numbers. Each number is subtracted from 53 and the mean of the number so obtained is found to be – 3.5. -Maths 9th

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Description : Mean of 50 observations was found to be 80.4. -Maths 9th

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Description : At a petrol pump, it was found that out of 50 vehicles -Maths 9th

Last Answer : (a) 11/25 (b) By using more of public transport wherever possible and using substitutes of petrol such as diesel and CNG.

Description : A cubical box has each edge 10 cm and another cuboidal box is 12.5cm long, 10 cm wide and 8 cm high -Maths 9th

Last Answer : From the question statement, we have Edge of a cube = 10cm Length, l = 12.5 cm Breadth, b = 10cm Height, h = 8 cm (i) Find the lateral surface area for both the figures Lateral surface ... . Therefore, the total surface area of the cubical box is smaller than that of the cuboidal box by 10 cm2

Description : A metallic sheet is of rectangular shape with dimensions 48 cm x 36 cm. From each of its corners, a square of 8 cm is cut-off and an open box is made of the remaining sheet. Find the volume of the box. -Maths 9th

Last Answer : When squares of 8 cm is cutt-off from rectangulare sheet then, Length of box (l) = (98 - 8 - 8) = 32 cm Breadth of box (b) = (36 - 8 - 8) = 20 cm Height of box (h) = 8cm ∴ Volume of box = lbh = 32 x 20 x 8 = 5120 cm3

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Description : A metallic sheet is of rectangular shape with dimensions 48 cm x 36 cm. From each of its corners, a square of 8 cm is cut-off and an open box is made of the remaining sheet. Find the volume of the box. -Maths 9th

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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

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Description : A cubical box has each edge 10 cm -Maths 9th

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Description : A metallic sheet is of rectangular shape with dimensions 28m × 36m. From each of its corners, a square is cut off so as to make an open box. -Maths 9th

Last Answer : R.E.F image Volume of box =l×b×h From the diagram l=48−2(8) ∵ Two square formed side =32m b=36−2(8) =20m Also h=8m from question ∴ Volume =32×20×8 =5120m3

Description : A rectangular box has dimensions x, y and z units, where x < y < z. If one dimension is only increased by one unit, -Maths 9th

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Description : How to lubricate splitter pliers that are rusty and do not want to work?

Last Answer : They need to be cut off first. For relaxation and agitation, the WD 40, perhaps an even better MD40, could help, but it's time to let it go. Sometimes to loosen rust, soaking in kerosene or diesel ... WD 40 will be good and functional. Of course, another oil can also be used. But never kitchen.

Description : Why does not stainless steel get rusted easily ?

Last Answer : Why does not stainless steel get rusted easily ? A. Chromium and nickel combine with iron B. ... a hard chemical compound with chromium present in it.

Description : I am a single parent and my roof needs to be replaced I have a metal roof and it has leaked in 2 spots and is all rusted. Is there any assistance for me Thank you Candi Clinard ?

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Description : can the floor under the drivers seat be repaired. It is all rusted out.?

Last Answer : Any metal area can either be repaired or replaced, just depending on the car how easy or not that will be. If repair or replacement panels are not available they can be made. Floyd West Klassic Rides LLC 704- ... It also depends on how new the car is and if they can find an old one at the junkyard.

Description : Rusted wrought iron outdoor furniture?

Last Answer : Due to the nature of damage to the furniture being variable, there's no one kit that would be universally applicable. Instead, you'll want to start with an iron brush to remove rust. And move on from there to determine what the next step will be.

Description : The weight of a rusted iron object compared to that of an unrusted one is (a) Appreciably more than (b) The same as (c) Less than (d) More or less the same as

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Description : To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as–

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Description : When iron is rusted, it is (A) Converted to a fine powder (B) Reduced (C) Oxidised (D) None of these

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Description : To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as

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Description : is a common troubles in the operation of Mower. a) Knives get twisted. b) Knives get melted. c) Knives gets rusted. d) Knives gets break

Last Answer : Knives gets break

Description : How to Repair Rusted Truck Frames

Last Answer : How to Repair Rusted Truck Frames If you love your truck and more importantly love to work on trucks, one project that many tackle is to restore older trucks, jeeps, SUV's, etc to their old glory. ... the patch was welded. Now that the primer has dried, finish the frame with paint and you are done.

Description : A bag contains x white, y red and z blue balls. -Maths 9th

Last Answer : Number of blue balls = z Total balls = x + y + z therefore P(blue ball)= z /(x+y+z )

Description : A bag contains x white, y red and z blue balls. -Maths 9th

Last Answer : Number of blue balls = z Total balls = x + y + z therefore P(blue ball)= z /(x+y+z )

Description : A bag contains 5 white, 7 red and 4 black balls. If four balls are drawn one by one with replacement, what is the probability that none is white. -Maths 9th

Last Answer : Let A, B, C, D denote the events of not getting a white ball in first, second, third and fourth draw respectively. Since the balls are drawn with replacement, therefore, A, B, C, D are independent events such that P (A) = P (B) ... x \(rac{11}{16}\) x \(rac{11}{16}\) = \(\big(rac{11}{16}\big)^4.\)

Description : A bag contains 6 black and 3 white balls. Another bag contains 5 black and 4 white balls. If one ball is drawn from each bag, -Maths 9th

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Description : A bag contains 7 white, 5 black and 4 red balls. Four balls are drawn without replacement. -Maths 9th

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