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If Sigma(r=0)^(25) { ""^(50)Cr.""^(50-r...

If `Sigma_(r=0)^(25) { ""^(50)C_r.""^(50-r)C_(25-r)}=K(""^(50)C_(25))` then K is equal to

A

`2^(25)-1`

B

`(25)^2`

C

`2^(25)`

D

`2^(24)`

Text Solution

Verified by Experts

The correct Answer is:
C
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ALLEN-Solutions of Triangle & Binomial Theorem-EXERCISE (J-M)
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  19. If .^(20)C(1)+(2^(2)) .^(20)C(2) + (3^(2)).^(20)C(3) +......+(20^(2))....

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  20. The term independent of x in the expansion of ((1)/(60) - (x^(8))/(81)...

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