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The coefficient of x^(2)y^(3) in the exp...

The coefficient of `x^(2)y^(3)` in the expansion of `(1-x+y)^(20)` is

A

a) `(20!)/(2!3!)`

B

b) `-(20!)/(2!3!)`

C

c) `(20!)/(5!2!3!)`

D

d) None of these

Text Solution

Verified by Experts

The correct Answer is:
D
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