jee-main 2020 Q71

jee-main · India · session2_05sep_shift2 Binomial Theorem (positive integer n) Find a Specific Coefficient in a Single Binomial Expansion

The coefficient of $x^4$ in the expansion of $\left(1 + x + x^2 + x^3\right)^6$ in powers of $x$, is

The coefficient of $x^4$ in the expansion of $\left(1 + x + x^2 + x^3\right)^6$ in powers of $x$, is