Math, asked by shivitripathi1802, 2 days ago

Find n, if n/7 * C = n/7 * C

Answers

Answered by praptiingole79

1

Step-by-step explanation:

n

C

7

=

n

C

5

7!×(n−7)!

n!

=

5!×(n−5)!

n!

7×6

1

=

(n−5)(n−6)

1

comparing LHS and RHS we get ,n =12

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