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Sum of the odd binomial coefficients of ...

Sum of the odd binomial coefficients of `(1+x)^(50)` is

A

`2^(text (50)) `

B

`2^(50)-1 `

C

`2^(49) `

D

none of these

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The correct Answer is:
C
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HIMALAYA PUBLICATION-BINOMIAL THEOREM-QUESTION BANK
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  4. If (1+x+x^(2))^(n) = a(0)+a(1) x+a(2) x^(2)+.. .+a(2 n) x^(2 n) then ...

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  7. The sum of the coefficients in the expansion of (1+x-3x^(2))^(3148)

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  8. The middle term in the expansion of((x-(1))/(x))^(18) is...

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  11. The coefficient of x^(5) in (1+x^(2))^(5)(1+x)^(4) is

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  12. If the coefficient of the r^(th) term and the (r+1)^ (th) term is th...

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  13. The co-efficient of x^(-9) in the expansion of ((x^(2))/(2)-(2)/(x)...

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  14. Let (1+x^(2))^(2)(1+x)^(n) = sum(k=0)^(n+4) a(k) x^(k) . If a(1) , a...

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  15. If in the expansion of (1+x)^(m)(1-x)^(n) the coefficients of x and x^...

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  16. The term independent of x in the expansion of (x^(2)-(1)/(x))^(6) ...

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  17. sum(r=0)^(m)( n+r )C(n)=

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  18. If (1+2 x+x^(2))^(n)=sum(r=0)^(2 n) a(r) x^(r), then a(r) =

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