engineering recuitment BARC Stipendiary Trainee Category II 2023 Mock Test Mathematics Binomial Theorem Binomial Expansion

\(\displaystyle\sum_{r=0}^n \)2^rC(n, r) किसके बराबर है?

1

2ⁿ

2

3ⁿ

3

2²ⁿ

4

3²ⁿ

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