MCQ
પ્રથમ $n$ અયુગ્મ પ્રાકૃતિક સંખ્યાઓનો ગુણાકા૨ $........$ છે.
- A$n^2$
- ✓$\left(\frac{1}{2}\right)^n._{2n}P_n$
- C$2^n \times _{2n}P_n$
- D$\left(\frac{1}{2}\right)^n\ \binom{2n}{n}$
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