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Arrange the expansion of (x^(1//2) + (1...

Arrange the expansion of `(x^(1//2) + (1)/(2x^(1//4)))^n` in decreasing powers of x. Suppose the coefficient of the first three terms form an arithmetic progression. Then the number of terms in the expression having integer powers of x is -
(A) 1
(B) 2
(C) 3
(D) more than 3

A

1

B

2

C

3

D

More than 3

Text Solution

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The correct Answer is:
C
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