A. (6, 25)
B. (-6, -7)
C. (6, 1)
D. (-6, 25)
The term independent of x in the expansion of (1+x+2x3)(3x2/2-1/3x/)9 is
The number of terms in the expansion of (a+b+c+d)5 is
The coefficient of x2 in1+x2/(1-x)3 is
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=