A. 3
B. 4
C. 7
D. 12
If p and q are the coefficients of xn in (1+x)2n-1 and (1+x)2n respectively then 2p=
C0+C1/2+C3/3+ …………Cn/n+1+ =
The positive integer which is just greater than (1+0.0001)10000 is
The coefficient of x10 in 1-2x+3x2/1-x is
C1/1 – C2/2 + C3/3 – C4/4 +………. +(-1)n-1 Cn/n =
The coefficient of x5 in the expression of (1+x)21+(1+x)22+……+(1+x)30 is
The coefficient of x7 in (ax2-1/bx)11 is equal to the coefficient of x-7 in (ax-1/bx2) then ab=
The number of non zero terms in the expansion of (8+2)101 - (8-2)101 is
The coefficients of three consecutive terms in the expansion of (1+x)n are in the ratio 1:7:42, then n=
Which term of (2x-3y)12 when x=1, y=5/2 numerically greatest?