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If the coefficients of r^(th) and (r+1...

If the coefficients of `r^(th) `and `(r+1)^(th)` term in the expansion of `(1+x)^(n)` are equal then n=

A

1: 3

B

2: 5

C

3: 6

D

4: 8

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The correct Answer is:
C
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HIMALAYA PUBLICATION-BINOMIAL THEOREM-QUESTION BANK
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  6. The coefficient of the term independent of x in the expansion of (sqrt...

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  7. If C(0),C(1),C(2), . . . .,C(n) are binomial coefficients of order n,...

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

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

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

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

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  20. (C(0))/(1)-(C(1))/(2)+(C(2))/(3)+.. . .+((-1)^(n))/(n+1). C(n) =

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