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Frequently Asked IBM Numerical Ability - Probability Interview Questions with Answers

(#M40004663) IBM QUESTION probability Keep an EYE

There are 10 items in a box, out of which 3 are defective. 2 balls are taken one after the other. What is the probability that both of them are defective?

Asked In IBM (13 years ago)

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(#M40106571) IBM QUESTION Keep an EYE

In a quiz competition , the host asked a question and provided three possible answers. what is the probability of that the answer choice which rohit

a.1/3
b.1/2
c.3c1*3/2
d.2/3

Asked In IBM Anilkumar (10 years ago)

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(#M40005591) IBM QUESTION Probability Keep an EYE

A man bets on number 16 on a roulette wheel 14 times and losses each time. On the 15th span he does a quick calculation and finds out that the number 12 had appeared twice in the 14 spans and is therefore, unable to decide whether to bet on 16 or 12 in the 15th span. Which will give him the best chance and what are the odds of winning on the bet that he takes?

Asked In IBM (13 years ago)

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(#M40005600) IBM QUESTION Probability Keep an EYE

Two dice are thrown together. What is the probability that the sum of the numbers on the two faces is divisible by 4 or 6?
A. 5/18 B. 7/18
C. 9/18 D. 12/18

Asked In IBM (13 years ago)

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(#M40005597) IBM QUESTION Probability Keep an EYE

A man can hit a target once in 4 shots. If he fires 4 shots in succession, what is the probability that he will hit his target?

Asked In IBM (13 years ago)

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(#M40004645) IBM QUESTION Permutations & combinations Keep an EYE

A box contains 8 Red, 16 Blue, 4 Yellow and 12 Black Balls.
One ball is picked up randomly. What is the probability that it is not Blue ?
1) 0.24
2) 0.8
3) 0.3
4) 0.5
5) None of these

Asked In IBM (13 years ago)

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(#M40005598) IBM QUESTION Probability Keep an EYE

A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is
A. 4/19 B. 7/19
C. 12/19 D. 21/95

Asked In IBM (13 years ago)

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(#M40005602) IBM QUESTION Probability Keep an EYE

In a simultaneous throw of two dice, what is the probability of getting a total of 10 or 11?
A. 1/4 B. 1/6
C. 7/12 D. 5/36

Asked In IBM (13 years ago)

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(#M40005583) IBM QUESTION Probability Keep an EYE

A jar contains 2 red, 3 blue, and 4 green marbles. Niki draws one marble from the jar, and then Tom draws a marble. What is the probability that Niki will draw a green marble and Tom will draw a blue marble?

Asked In IBM (13 years ago)

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(#M40005585) IBM QUESTION Probability Keep an EYE

There are 9 popsicles: 3 orange, 3 cherry, 3 grape. There are 4 children. What is the probability that all 4 children will get the flavor of their choice?

Asked In IBM (13 years ago)

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