[JEE Advanced 1983] if 1 ax n 1 8x 24x 2 then a and n
If $(1+ax)^n=1+8x+24x^2+\cdots$, then $a=$ ____ and $n=$ ____
1 Answer
VAVidaara Admin
✓ Vidaara Team
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· 2d ago
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Answer: $a=2,\ n=4$.
$na=8$ and $\frac{n(n-1)}2a^2=24$; dividing gives $\frac{(n-1)a}2=3$, so with $a=8/n$, $n=4,a=2$.
JEE Advanced 1983 · Binomial Theorem — verified solution by the Vidaara Team.
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