Math, asked by navya2160, 8 months ago

If the sum of the first 22 terms of AP 9,4,-1....

Answers

Answered by bodakuntalacchanna

3

Answer:

Given that,

a=9,

d=-5

the sum of first 22 terms of AP

Sn=n/2[2a+(n-1)d]

S22=22/2[2(9)+(22-1)(-5)]

=11[18+21(-5)]

=11[18×-105]

=11×-1890

=-20790

Previous Question

Next Question

Similar questions

Math, 4 months ago

Find the area of triangular region two sides of which are 18 m and 10 m and the perimeter is 42m.

Social Sciences, 4 months ago

Why was the tiger project started in 1971 in india?

Hindi, 4 months ago

उड़ना ' इस क्रिया का द्वितीय प्रेरणार्थक रूप होगा | उड़ाना जाना उड़वाना आना...

Chemistry, 8 months ago

molecule is said to be optically inactive it has a.sigma b.sn c.i d.all...

Math, 8 months ago

( -100÷5 ) = ? -100 ÷ 5 = ?

English, 10 months ago

in the given figure a b is equal to 20 cm is a midpoint of a b and M is midpoint of BC using euclids axioms , prove that am =nc...

CBSE BOARD X, 10 months ago

Google doodle of india would be same in all countries for eg. If subject Holi is doodle then it would be similar in all countries?

Physics, 10 months ago

what will happen with moon when the earth's gravity become zero...