If the fourth term in the expansion of ( ax + 1 x )^ n is 5/2. Then find the value of a…
Mathematics · JEE Main · NTA Exams — Binomial Theorem And Its Simple Applications
If the fourth term in the expansion of \(\left(\mathrm{ax}+\frac{1}{\mathrm{x}}\right)^{n}\) is 5/2. Then find the value of a and n ?
- \(a=1, n=6\)
- \(\mathrm{a}=1 / 2, \mathrm{n}=\mathrm{b}\)
- \(a=2, n=5\)
- \(\mathrm{a}=1 / Z_{1} \mathrm{n}=5\)
Answer
(A) a=1, n=6
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