Probability Test

Result

Probability Test - 67

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Weekly Quiz Competition

Question 1
4 / -1

One die is thrown three times and the sum of the thrown numbers is 15. The probability for which number 4 appears in first throw

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Solution
Question 2
4 / -1

One ticket is selected at random from 50 tickets numbered 00, 01, 02,…,49. Then the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero, equals

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Solution
Question 3
4 / -1

A man is known to speak the truth 3 out of 4 times. He throws a die and reports that it is a six. The probability that it is actually a six is

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None of these

Solution
Question 4
4 / -1

A bag ‘A’ contains 2 white and 3 red balls and bag ‘B’ contains 4 white and 5 red balls. One ball is drawn at random from a randomly chosen bag and is found to be red. The probability that it was drawn from bag ‘B’ was

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D

Solution
Question 5
4 / -1

A bag X contains 2 white and 3 black balls and another bag Y contains 4 white and 2 black balls. One bag is selected at random and a ball is drawn from it. Then the probability for the ball chosen be white is

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D

Solution
Question 6
4 / -1

Bag A contains 4 green and 3 red balls and bag B contains 4 red and 3 green balls. One bag is taken at random and a ball is drawn and noted it is green. The probability that it comes bag B

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B

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Solution
Question 7
4 / -1

8 coins are tossed simultaneously. The probability of getting at least 6 heads is

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D

Solution
Question 8
4 / -1

In a box containing 100 eggs, 10 eggs are rotten. The probability that out of a sample of 5 eggs none is rotten if the sampling is with replacement is

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Solution
Question 9
4 / -1

If X is a Poisson variate such that P(X = 1) = P(X = 2), then P(X = 4) is equal to

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Solution
Question 10
4 / -1

In a box of 10 electric bulbs, two are defective. Two bulbs are selected at random one after the other from the box. The first bulb after selection being put back in the box before making the second selection. The probability that both the bulbs are without defect is

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Solution