Test SeriesFree PYQsExamsPricing

JEE Main Mathematics question

MathematicsBinomial TheoremJEE Main

The sum of all those terms which are rational numbers in the expansion of is

Answer: (A)

Solution

The general term is , rational iff and , i.e. is a multiple of : or . The rational terms are and . Their sum is

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-021333