If the fourth term in the expansion of ( px + 1 x )^ n is independent of x, then the…
Mathematics · JEE Advanced · NTA Exams — Binomial Theorem And Its Simple Applications
If the fourth term in the expansion of \(\left(\mathrm{px}+\frac{1}{\mathrm{x}}\right)^{\mathrm{n}}\) is independent of x, then the value of term is
- 5p3
- 10p3
- 20p3
- none of these
Answer
(C) 20p 3
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