defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Sequences and Series Arithmetic Progressions
Find the sum to n terms of the A.P., whose nth term is 5n + 1
1
\(\rm \dfrac n 2\)
2
\(\rm \dfrac n 2\) (7+ 4n)
3
\(\rm \dfrac n 2\) (7+ 5n)
4
None of these