Teaching AP TET Paper I & Paper II Mock Test Series 2025 Quantitative Aptitude Number System Integers
If the sum of the first n terms of an arithmetic progression is 7n2 + 2n, then the sum of its third and fifth terms is:
1
75
2
120
3
102
4
12
If the sum of the first n terms of an arithmetic progression is 7n2 + 2n, then the sum of its third and fifth terms is: