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For 2le rlen,{:((n),(r)):}+2({:(n),(r-1)...

For `2le rlen,{:((n),(r)):}+2({:(n),(r-1):})({:(n),(r-2):})=`

A

`({:(n+1),(r-1):})`

B

`2({:(n+1),(r-1):})`

C

`2({:(n+2),(" "1):})`

D

`({:(n+2),(" "n):})`

Text Solution

Verified by Experts

The correct Answer is:
D
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