A. 219

B. 218

C. 40C20-219

D. 238

The 4^{th} term of ^{6}(x+2/x^{2})^{6 }is

If x is so small that x^{2} 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 C_{0}^{2}-C_{1}^{2}+C_{2}^{2}-……….+(-1)^{n }C_{n}^{2} =

The number of non-zero terms in the expansion of (1+3√2x)^{9}+(1+3√2x)^{9}is equal to: