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Interview Q&A / Aptitude

INTERVIEW Q&A · 116 QUESTIONS

Aptitude interview questions

Quantitative shortcuts for placement tests: percentages, time and work, and more.

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  1. In how many ways can 5 boys and 3 girls stand in a row so that no two girls are next to each other?

    14,400. Arrange the boys first: 5! = 120. They create 6 gaps (including the two ends). Choose and fill 3 of those gaps with the girls in order: 6 x 5 x 4 = 120. Total 120 x 120 = 14,400.

    AdvancedQuick answer1 min read
  2. In how many ways can a committee of 5 be formed from 6 men and 4 women so that it has at least 2 women?

    186. Total committees C(10,5) = 252. Subtract those with no woman, C(6,5) = 6, and with exactly one woman, 4 x C(6,4) = 60. 252 - 66 = 186.

    AdvancedQuick answer1 min read