1.

2+ 4+ 7 + 11 + 16 + ….. upto n terms is equal to

Answer»

`(1)/( 6) ( N^(2) + 3N+ 8)`
`(n)/( 6) ( n^(2) + 3n + 8)`
`(1)/( 6) ( n^(2) - 3n + 8) `
`(n)/( 6) ( n^(2) - 3n+ 8)`

Answer :B


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