Math, asked by bhajanmehra1234, 7 months ago

if C(n,8)=C(n,6) find C(n,2)​

Answers

Answered by bhartinikam743
2

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Answered by 20144415
1

Answer:

We have,

C(2n,3):C(n,2)=12:1

n

C

2

2n

C

3

=

1

12

2n

C

3

=12⋅

n

C

2

3!

2n(2n−1)(2n−2)

=12⋅

2!

n(n−1)

6

4(2n−1)

=

2

12

⇒2n−1=9

⇒n=5

Step-by-step explanation:

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