Multiple Choice Question (MCQ)
If the sum of n terms of an arithmetic progression is 2n^2 +5n, then its nth term is

×
4n3

×
3n4

✓
4n+3

×
3n+4
If the sum of n terms of an arithmetic progression is 2n^2 +5n, then its nth term is
4n3
3n4
4n+3
3n+4
Since the sum of n terms of an arithmetic progression is 2n^2 +5n
S_n = 2n^2 +5n
then
S_{n1} = 2(n1)^2+5(n1)
a_n = S_nS_{n1}
=2n^2 +5n 2(n1)^2+5(n1)
=4n+3
Therefore, C is correct