If the sum of first m terms of an AP is 2m^2 + 3m, then its second term is:... | MCQ 1m | Maths | SuperPadhai

Arithmetic Progressions > Question

MCQ1 markYear: 2025EasyCBSE Class 10

arithmetic-progressionssum-of-terms

Question

If the sum of first

m

terms of an AP is

2 m^{2} + 3 m

, then its second term is:

Solution

1

S_{1} = 2 (1)^{2} + 3 (1) = 5 = a_{1}

.

S_{2} = 2 (4) + 6 = 14

. So

a_{2} = S_{2} - S_{1} = 14 - 5 = 9

.

+1 mark

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