Question

find the sum of first 22terms of an AP in which d is 7 and 22nd term is149​

Answer 1

Thatz Your Answer...

____________________________________________________

<Judge It Yourself...>

Hope it helps you! ヅ

✪ Be Brainly ✪

Answer 2

GIVEN

D = 7

a22 = 149

a + (n -1) d = 149

a + (n-1)7 = 149

a - 149 = (n-1)7---------- eq 1

Now sum of first 22 terms is given by

S22 = 11 ( 2a + (n-1)7)

putting value of (n-1)d from q

equation 1

s22 = 11 ( 2a + a - 149)

s22 = 11( a - 149)

in question a should be = 300

s22 = 11 ( 151)

s22= 1661

#BAL

#answerwithquality