Description : A cartoon contains 15 torch lights out of which 3 are defective. Two torch light are chosen at random from this cartoon. The probability that at least one of these is defective is. A) 13/35 B) 14/35 C) 11/35 D) 17/35
Last Answer : Answer: A) P (none is defective) = 12c2/15c2 = (12*11/2*1)/(15*14/2*1) = 66/105=22/35 P (at least one is defective) = (1 – 22/35) =13/35
Description : In 1970 a desktop calculator sold for about 100.00. Today the same type of calculator sells for as little as 25.00. What is the percent of decrease in the cost of desktop calculators?
Last Answer : In absolute terms, the percentage decrease is:percentage change = (new - old)/old 100%= (25 - 100)/100 100%= -75 %Being negative it means the change is a decrease of 75%-------- ... this as inflation, the decrease is approx 99.1% - in otherwords they are almost giving the calculator away today.
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 : 750 families with 3 children were selected randomly and the following data recorded If a family member is chosen at random, compute the probability that it has : -Maths 9th
Last Answer : (i) P(no boy child) =100 / 750 = 2 / 15 (ii) P (no girl child) = 120 /750 =4 / 25
Description : A natural number is chosen at random from amongst the first 300. What is the probability that the number chosen is a multiple of 2 or 3 or 5 ? -Maths 9th
Last Answer : (b) \(rac{11}{15}\)n(S) = 300 Let A : Event of getting a number divisible by 2 B : Event of getting a number divisible by 3 C : Event of getting a number divisible by 5 ∴ A ∩ B : Event of getting a number divisible by ... \(rac{320}{300}\) - \(rac{100}{300}\) = \(rac{220}{300}\) = \(rac{11}{15}\).
Description : If an integer P is chosen at random in the interval 0 ≤ p ≤ 5, the probability that the roots of the equation x^2 + px -Maths 9th
Last Answer : answer:
Description : If a number x is chosen at random from the numbers -2, -1, 0 1, 2. What is the probability that x 2 < 2? a. 2/5 b. 3/5 c. 1/4 d. 4/7
Last Answer : b. 3/5
Description : There are 2 vessels. 1st vessel contains 5white and 5 blue thread roll. 2nd vessel contains 4 white and 6 black thread roll. One roll is taken at random from first vessel and put to second vessel without noticing its color ... second roll being a white colored roll? A) 11/13 B) 9/11 C) 13/11 D) 5/12
Last Answer : Answer: B) Case 1: first was a white roll Now it is put in second vessel, so total white rolls in second vessel = 4+1 = 5, and total rolls in second vessel = 10+1 = 11 So probability of white roll ... = 5/11+4/11 = 9/11 (added the cases because we want one of these cases to happen and not both)
Description : What is an item that was selling for 72.00 is reduced to 60.00. Find the percent decrease in price. Round your answer to the nearest tenth.?
Last Answer : 0.167
Description : An integer is chosen at random from the first two hundred positive integers. What is the probability that the integer chosen is divisible by 6 or 8 ? -Maths 9th
Last Answer : As there are 200 integers, total number of exhaustive, mutually exclusive and equally likely cases, i.e, n(S) = 200 Let A : Event of integer chosen from 1 to 200 being divisible by 6⇒ n(A) = 33 \(\bigg(rac{200}{6}=33rac{1}{3}\ ... (rac{25}{200}\) - \(rac{8}{200}\) = \(rac{50}{200}\) = \(rac{1}{4}\).
Description : Three of the six vertices of a regular hexagon are chosen at random. The probability that the triangle with these vertices is equilateral equals : -Maths 9th
Last Answer : (c) \(rac{1}{10}\)Let S be the sample space.Then n(S) = Number of triangles formed by selecting any three vertices of 6 vertices of a regular hexagon= 6C3 = \(rac{6 imes5 imes4}{3 imes2}\) = 20.Let A : Event that the ... Required probability = \(rac{n(A)}{n(S)}\) = \(rac{2}{20}\) = \(rac{1}{10}\).
Description : What number is chosen at random from 1 to 10. Find the probability of not selecting a multiple of 2 or a multiple of3?
Last Answer : Need answer
Description : If truly random find the probability of Sue not being chosen to cook dinner 4 nights in a row if there are 3 total that can cook.?
Last Answer : 0.2
Description : There are 6 positive numbers and 8 negative numbers. Four numbers are chosen at random and multiplied. The probability that the product is a positive number is: a) 502/1001 b) 505/1001 c) 501/1001 d) 503/1001
Last Answer : b) 505/1001
Description : In a batch, 40% of the students offered Maths, 30% offered science and 15% offered both. If a student is selected at random, what is the probability that they has offered science or maths? A) 0.55 B) 0.65 C) 0.45 D) 0.75
Last Answer : Answer: A) P(M) = 0.40 P(S) =0.30 and P(M∩S) = 0.15 P(M∪S) = P(M) + P(S) - P(M∩S) = 0.55
Description : In a batch, there are 22 boys and 18 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is: a) 3754/8854 b) 4158/9880 c) 8514/9880 d) 2078/4920
Last Answer : Answer: B) Let , S - sample space E - event of selecting 1 girl and 2 boys. Then, n(S) = Number ways of selecting 3 students out of 40 = 40C3 = 9880 n(E) = 18C1 *22C2 = 18*231 = 4158 P(E) = n(E)/n(s) = 4158/9880
Description : Now that the gears of your brain are oiled, and working let us move on to the best and hardest math trivia questions. These quiz questions will test your calculation skills and just how good you ... trivia questions as quickly as you can to be crowned the Math King among your friends and family.
Last Answer : Was 2014 a leap year?
Description : What is 5 .167 round to nearest tenth?
Last Answer : It then is 5.2
Description : What is 25.5 round to the nearest tenth?
Last Answer : It is already rounded to the nearest tenth as 25.5 but whenrounded to the nearest ten it is 30
Description : What is 104 Divided By 5.1 Divide Then Round To The Nearest Tenth?
Last Answer : 20.3922
Description : Round 0.87 to to the nearest tenth?
Last Answer : 0.9
Description : what is 14.235 round to the nearest tenth?
Last Answer : It is: 14.2
Description : what- Two similar hexagonal swimming pools are shown.What is KJ Round to the nearest tenth?
Last Answer : 14.4 m
Description : What is 34.287 round to nearest tenth?
Last Answer : 34.287 rounded to the nearest tenth is 34.3. The digit to theright of the tenth is the hundredth. When rounding anything lessthan five you round down. When rounding anything five or more youround up. The hundredth digit is 8 which is more 5 so you round up,making the answer 34.3.
Description : How do you Round 53.981 to the nearest tenth?
Last Answer : It is 54.0 and not 53.9 to the nearest tenth
Description : How do round 2.19 to the nearest tenth?
Last Answer : It is 2.2
Description : How do you round 555.55 to the nearest tenth?
Last Answer : 555.6
Description : What is 0.767 round it to the nearest tenth?
Last Answer : 0.8
Description : How do you Round to the nearest tenth 24.316?
Last Answer : You look at the digit in the hundredths place. If it is 0 to 4,we round down. If it is 5 to 9, we round up. In this case it is a1, so we round down, giving:24.3
Description : How do you round 0.65 to the nearest tenth?
Last Answer : It then is 0.7 to the nearest tenth
Description : How do you round 102.65 to the nearest tenth?
Last Answer : It is 102.7 when rounded to the nearest tenths.
Description : What is round 29.85 to the nearest tenth?
Last Answer : two answersas 29.85 is in the middle29.8 rounding down29.9 rounding up
Description : What is 0.955 round to the nearest tenth of an inch?
Last Answer : 0.995 inches rounded to the nearest tenth of an inch is 1.0inch.
Description : What is round 943.492 to the nearest tenth?
Last Answer : 943.5
Description : What is the answer to round 0.43 to the nearest tenth?
Last Answer : 0.4 is the answer.
Description : What is 0.247 Round to the nearest tenth?
Description : How do you round 521.362 to the nearest tenth.?
Last Answer : It is then 521.4 to the nearest tenth because the digit 6 isgreater than 5
Description : What place value should you look at to round 13.46 to the nearest tenth?
Last Answer : It is 13.5 when rounded to the nearest tenth because the digit 6is greater than 5
Description : What is 12.2 round nearest tenth?
Last Answer : Feel Free to Answer
Description : What is 35.994 round to the nearest tenth?
Last Answer : It is 36.0 when rounded to the nearest tenth and not 35.9
Description : What is 0.59 round to the nearest tenth?
Last Answer : 0.6
Description : How you round 1.36 to the nearest tenth?
Last Answer : What is the answer ?
Description : What is Round 0.12 to the nearest tenth?
Description : How do you Round 65.481 to the nearest tenth?
Last Answer : so since it is to the nearest tent (0.1) is you look at thenumber that is in the hundredth (0.01) spot. For this numberrounded to the nearest tenth is 65.5
Description : How do you round 22.39 to the nearest tenth?
Last Answer : It then is 22.4 because the digit 9 rounds up to 4
Description : In order for the two figures shown below to be similar the length of the unknown side must be . If necessary round your answer to the nearest tenth.?
Description : What is 9058 round to the nearest tenth place?
Last Answer : The number is already rounded to a greater extent that that!
Description : How do you round 9.058 to the nearest tenth place?
Last Answer : If you see the number is ≥5 then you would round up. In thisnumber, 9.058, you see the number in the hundredths place is 5, soyou would round the number up to 9.1. Since the "8" in thethousands place is irrelevant in this, we take it out.