A. (3,4,1)
B. (4,1,3)
C. (3,-4,-1)
D. (-4,1,3)
The coefficient of x6 in (1+x+x2+x3+x4+x5)6 is
The ratio of the coefficient of x15 to the term independent of x in (x2+2/x)15 is
The number of non zero terms in the expansion of (a+b)20 – (a-b)20 is
mCr+ mCr-1nC1+mCr-2. nC2+………..+ nCr =
Sum of the last 20 coefficients in the expansion of (1+x)39, when expanded in ascending powers of x, is
The 4th term of 6(x+2/x2)6 is
If x is so small that x2 and higher powers of x may be neglected then (1-x)1/2(1+x)2/3/(1-x)1/2
3√1003 -3√997
If n is even then C02-C12+C22-……….+(-1)n Cn2 =
The number of non-zero terms in the expansion of (1+3√2x)9+(1+3√2x)9is equal to: