A. 1001C50
B. 1000C50
C. 1002C50
D. 1002C51
The midpoint of the line segment joining (2,3,-1), (4,5,3) is
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 =