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Question

The value of k is if 6Ck=6!(4)!×k!

A
5
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B
2
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C
4
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D
3
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Solution

The correct option is B 2
Given that : 6C=6!4!×k!
Since,
6Ck=6!(6k)!×k!
Hence,
6!(6k)!×k!=6!4!×k!
So,
(6k)!=4!
6k=4
k=2

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