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The value of sum(r=0)^22 "^(22)Cr "^23Cr...

The value of `sum_(r=0)^22 "^(22)C_r "^23C_r` is

A

`"^45C_24`

B

`"^45C_23`

C

`"^44C_23`

D

`"^44C_22`

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The correct Answer is:
B
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