If Tr+1 is the term independent of in then

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Solution

Q.
If $T_{r + 1}$ is the term independent of $x$ in ${(\sqrt{a} x^{2} + \frac{1}{2 x^{3}})}^{10}$ then $r$ =____

1 4

2 5

3 6

4 7

Ans.
(1)

$r = \frac{n p}{p + q}$ $n = 10$ $p = 2$ $q = 3$

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