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The number of non-negative integral solu...

The number of non-negative integral solution `x_1 + x_2 + x_3 + x_4 <=n` (where n is a positive integer) is :

A

`"^(n+3)C_3`

B

`"^(n+2)C_3`

C

`"^(n+4)C_4`

D

`"^(n+4)C_3`

Text Solution

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The correct Answer is:
C
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