Questions & Answers: "Permutation, Combination and Probability"

Complete guide to "Permutation, Combination and Probability" for Aptitude Tests students. Below you will find important questions and model answers to help you prepare.

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Out of 5 Brothers and 3 sisters, a committee of 3 members consisting of 1 sister and 2 brothers is to be formed. In how many different ways can it be done?

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Whenever Meena and Madhu buy ice creams from the local stall, they both always choose one scoop of each of two different flavors. The flavors available on stall are chocolate, coffee, lichi, mango, almond, strawberry, and vanilla. Meena does not eat almond, and Madhu does not eat chocolate or coffee ice cream. Select number of more combinations that Meena can choose than those of Madhu.

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How many 2-digit numbers can be formed with the digits 3, 4, 7, 8, 9 if none of the digits is being repeated in any of the numbers so formed?

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Era lives in a certain village near the junction marked 'A' and works at the junction marked 'B'. All road sections in this village are 100 m long. Era likes to vary her walk to work but always walks the shortest possible distance. Select the number of different routes that she can take.

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