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In the expansion of (x +y + z)^25...

In the expansion of `(x +y + z)^25`

A

every term is of the form `""^(25)C_(r).""^(r)C_(kj). X^(25-r). Y^(r-k)z^(k)`

B

the coefficient of `x^(8)y^(9)z^(9)` is zero

C

the number of terms is 325

D

none of these

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The correct Answer is:
A, B
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