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The second, third and fourth terms in t...

The second, third and fourth terms in the binomial expansion `(x+a)^n`are 240, 720 and 1080, respectively. Find x, a and n.

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To solve the problem, we need to find the values of \( x \), \( a \), and \( n \) given that the second, third, and fourth terms of the binomial expansion \( (x + a)^n \) are 240, 720, and 1080, respectively. ### Step 1: Write the expressions for the terms The \( r \)-th term in the binomial expansion \( (x + a)^n \) is given by: \[ T_{r+1} = \binom{n}{r} x^{n-r} a^r \] ...
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