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Quantitative Aptitude

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Permutation, Combination & Probability

Question
9 out of 20
 

There are seven candidate for 3 post in how many ways can the post be filled?



A 210
B 120
C 73
D 37
E None of These

Ans. A

For first place there are 7 candidate while for second there are six candidate because one is selected in 1st post same for 3rd post rest are 5 candidate so total candidate be 7 x 6 x 5 = 210

Permutation, Combination & Probability Flashcard List

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