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Question: The term independent of x in the expansion of \(x + y\) will be....

The term independent of x in the expansion of x+yx + y will be.

A

5

B

6

C

7

D

8

Answer

7

Explanation

Solution

x5x^{5}

Thus term independent of

(1+x)21+(1+x)22+..........+(1+x)30(1 + x)^{21} + (1 + x)^{22} + .......... + (1 + x)^{30}

51⥂C551 ⥂ C_{5}