JEE Main Maths · Binomial Theorem

Differentiation Method for Sums

Differentiation Method for Sums (Binomial Theorem) was asked once in the 42 JEE Main shifts Lumi analysed, in 2020. 1 of the 1 had a numerical answer.

Times asked: 1; in 1 shift
Years: 2020
Usual format: Numerical value; Calculation
Pattern: Gone quiet; asked once so far

How it is asked

Sum of weighted binomial coefficients series

Difficulty

Easy 0Medium 1Hard 0

Where it sits

Chapter: Binomial Theorem. Topic: Binomial Coefficients, 26 questions over 18 ideas.

The question

Newest first, each with its options and official answer.

9 Jan 2020, Shift 2 · Q71If $C_r\equiv{}^{25}C_r$ and $C_0+5\cdot C_1+9\cdot C_2+\ldots+(101)\cdot C_{25}=2^{25}\cdot k$ , then $k$ is equal to ______.MediumNumerical value