If the sum of the binomial coefficients in the expansion of is 243

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

If the sum of the binomial coefficients in the expansion of

(x^2 + \frac{2}{x})^n

is 243, the term independent of

x

is equal to (1) 40 (2) 30 (3) 20 (4) 10