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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Application +4 | -1

A meeting is to be addressed by 5 speakers A, B, C, D, E. In how many ways can the speakers be ordered, if

B

must not precede A (immediately or otherwise)?

View answer and explanation

Correct option: A

24

Option A (24) is correct because, with B not preceding A, we can consider A always following B, and arrange the remaining 4 speakers.

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