Chapter 7: Problem 502
If \(\mathrm{P}\) and \(\mathrm{Q}\) are coefficients of \(\mathrm{x}^{\mathrm{n}}\) in expansion of \((1+\mathrm{x})^{2 \mathrm{n}}\) and \((1+x)^{2 n-1}\) then (a) \(\mathrm{P}=\mathrm{Q}\) (b) \(P=2 Q\) (c) \(2 \mathrm{P}=\mathrm{Q}\) (a) \(P+Q=0\)