Question

Write the formula for the sum of the term in AP and explain the term in it

Answer 1

There are two formulas for finding the Sum.

Sn is the Sum of the terms of given AP.

• Sn=
• $\frac{n}{2} \times (2a + (n - 1)d)$
• Sn=
• $\frac{n}{2} \times (a + l)$

Where a is the first term, n is the number of terms, d is the common difference between two consecutive terms, and l is the last term of the given AP.