Find the 3th term of the extension `(2a+b)^8`

Find the 2th term of the extension (x - 1/x)^10

Determine : the 8th term in the expansion of (2a+b)^(15)

Find the middle term of the expansion of (a^2/3+3/a^2)^8

Find the 4^th term in the expansion of (x-2y)^12 .

Find the 11th term of the sequence {(1)/(2), (1)/(3), (1)/(5), (1)/(8), (1)/(12),…} .

Find the 24th term of the sequence: 12, 10, 8, 6,……

If the 5th term of the expansion of (x^(2//3)+x^-1)^n is the term independet of x,then find th value of n.

The power of a of 10th term in the extension (a+2b)^20 -

Find the 20^(th) term of the series 2 xx 4 + 4 xx 6 + 6 xx 8 + ... + n terms.

Find a if the 17^th and 18^th terms of the expansin (2 + a)^50 are equal.