Probability

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Probability questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

  • Q1.A fair coin is tossed a fixed number of times. If the probability of getting 4 head equal to the probability of getting 7 heads, then the probability of getting 3 head is.

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  • Q2.Amarnath has 3 shares in a lottery containing 4 prizes & 11 blanks. Bimla has two shares in a lottery containing 2 prizes and 6 blanks. Compose their chance of success.

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  • Q3.There are two buckets A & B. Bucket A has 5 white balls & 6 red balls in it and bucket B contains 3 red balls & 4 white balls in it. A ball is taken from A & placed in B, after which a ball is then transferred from B to A. What is probability that the configuration of buckets does not change due to the transfer?

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  • Q4.A basket has 6 apples, 4 oranges, 2 bananas and 3 mango, if two fruits are picked randomly, what is the probability that both are apples ?

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  • Q5.How many 4-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated?

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  • Q6.A positive integer is divided by 5. What is the probability that the remainder is not 3?

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  • Q7.If the dice are thrown simultaneously then the probability of sum appearing on the dice is less than 3?

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  • Q8.Two dice are thrown, what is the probability that either a doublets or a total sum of 7 is obtained?

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  • Q9.100 and 200 items are produced by two machines A and B every day. Defective items produced by machine A and B simultaneously are 15 and 35. On picking up an item from a floor supervisor of the shop found it to be defective. What is the probability that it is from machine A?

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  • Q10.If a number is selected at random out of first 20 natural number, then what is the probability that it will be multiple of 5?

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