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Question

The number of distinct terms in the expansion of (x+y2)13+(x2+y)14 is

A
27
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B
29
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C
28
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D
25
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Solution

The correct option is C 28
To get common terms in both the expansions
xr1(y2)13r1=(x2)r2(y)14r2
r1=2r2 & 262r1=14r2
r1=8;r2=4
Only one term is common.

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