Math, asked by faritha5281, 9 months ago

a1=22 an=(-11) sn=66 then find n

Answers

Answered by dhavaltalaviya1020

1

ANS: 12

An=a1+(n-1)d

-11=22+(n-1)d........(1)

Sn= n/2(44-33).....as above equation

66=n/2(11)

then n=12

Previous Question

Next Question

Similar questions

English, 5 months ago

help.me solve this Plzzzzzzzzzzz zzzz zzzz...

Math, 5 months ago

The area of square whose perimeter is 28 cm is 14cm² 56cm² 28cm² 49cm²...

Math, 5 months ago

3^3x -27-(3)^5x = 3^8 plz solve it..

English, 9 months ago

Your father taught her maths change into passive...

Social Sciences, 9 months ago

If the Panch did injustice, what alternatives have the tribes. Say in short answer...

Business Studies, 11 months ago

Why is iron and steel called a basic industry and problem faced?

Business Studies, 11 months ago

Why is planning mode of strategic decision making superior to adapative /entrepreneurial mode?

Chemistry, 11 months ago

weightage for thermodynamics and chemical equilibrium acids and bases...