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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Application +4 | -1

{S_1},\;{S_2}, \ldots ,{S_{10}}

are the speakers in a conference. If

{S_1}

addresses only after

{S_2}

, then the number of ways the speakers address is

View answer and explanation

Correct option: D

\frac{{10!}}{{2!}}

Option D (

\frac{{10!}}{{2!}}

) is correct because

{S_1}

addresses only after

{S_2}

, so the total arrangements are divided by 2.

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