1.

If the sum of 1^(2) + (1^(2) + 2^(2) )…m terms = (m(m+1))/(6)k then k is equal to

Answer»

`(m+2)`
`(2m+1)/(2)`
`((m+1)(m+2))/(2)`
`(m+2)/(2)`

ANSWER :C


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