Question

Find the S7 of the terms in the AP 1.0, 1.5, 2.0, 2.5

Answer 1

Answer:

Here, a = 1, d = 0.5, n = 7

WE KNOW THAT,

SUM OF n TERMS IN AN AP IS GIVEN BY:

$\frac{n}{2} (2a +(n - 1)d)$

Substitute the values, you get

S7 = 35/2