" Find the sum "2+5+10+17+26

find the next term in the series 2, 5, 10, 17, 26, 37, 50

Find the sum: i] 28 + 31 + ·········· + 100 ii] 28 + 26 + ·········· + 10 . iii] 3 + 11 + 19 + ......+ +803 .

Find the sum of 25 + (-21) + (-20) + (+17) + (-1)

Find the sum of 25 + (-21) + (-20) + (+17) + (-1)

Which number will replace the question mark (?) in the following series? 2, 5, 10, 17, 26, 37, ?, 65, 82, 101

Find the sum of i] 41, 36, 31, ....... upto 10 terms ii] -26, -24, -22, ..... upto 36 terms.

Find the sum of the 10 terms of the following series -11, -8, -5, -2…….

Find the missing number : 2, 5, 10, 17, 26, ?

Find the n^(th) term of the series 2 + 5 + 10 + 17 + 26 + …