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Quantitative Aptitude

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Permutation, Combination & Probability

Question
15 out of 20
 

There are 6 multiple choice questions in an examination, How many sequences of answers are possible, if the first three questions have 4 choices each and the next three have 5 each?



A 6000
B 5000
C 8000
D 1200
E None of These

Ans. C First 3 question be answered as 4 x 4x 4 = 64

Last three question be answered as 5 x 5 x 5 = 125

So total combination = 64 x 125 = 8000

Permutation, Combination & Probability Flashcard List

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