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?

If two consecutive terms in the expansion of (x+a)ⁿ are equal where n is a positive integer then (n+1)a/x+a is

If the sum of odd terms and the sum of even terms in the expansion of (x+a)ⁿ are p and q respectively then p²+q²=