Question

Find the sum of first 22 terms of an AP in which d=7 and and term is=149.​

Answer 1

Answer:

sum of first n terms of AP

sum = a + (n-1)*d

where a is first term

n is number of terms

d is the difference

so

sum = 149 + (22-1) * 7

sum = 149 + 21 * 7

sum = 149 + 147

sum = 296