Aspire Faculty ID #15096 · Topic: JAMIA MILLIA ISLAMIA MCA 2018 · Just now
JAMIA MILLIA ISLAMIA MCA 2018

If A and B are coefficients of $x^n$ in $(1+x)^{2n}$ and $(1+x)^{2n-1}$ respectively, then $\dfrac{A}{B}$ equals

Solution

$A = \binom{2n}{n},\ B = \binom{2n-1}{n} \Rightarrow \dfrac{A}{B} = 2.$
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