Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Sequences and Series Arithmetic Progressions
If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
1
2
2
3
3
4
4
More than one of the above
5
None of the above