91- 6303239042
Weighted Sum of Binomial Coefficients
## Formula
$$\sum_{r=0}^{n}r{}^nC_r=n2^{n-1}$$
## Usage
- Used when each binomial coefficient is multiplied by its index.
Sign in
Please select an account to continue using cracku.in
↓ →
Weighted Sum of Binomial Coefficients
## Formula
$$\sum_{r=0}^{n}r{}^nC_r=n2^{n-1}$$
## Usage
- Used when each binomial coefficient is multiplied by its index.
Start your IIM journey with the right preparation and crack CAT 2026.
Educational materials for CAT preparation
