Math, asked by ItzAkhilKrishna, 10 months ago

which term of the AP:21,18,15,...is -81? Also , is ant term 0? Give REASON for YOUR ANSWER.......​

Answers

Answered by rajivrtp
3

Answer:

number of terms= 33 , zero is it's 8th term

Step-by-step explanation:

AP= 21, 18, 15, .............-81.

first rerm (a) = 21

common difference (d) = -3

let number of terms = n

since nth term = a+(n-1) d

-81= 21+(n-1) (-3)

-81 - 21 = -3n+3

=> 3n-3= 102

=> n= 33

we have to find 0 is aterm or not,

let 0 be the pth term

=> a+(p-1) d = 21+(p-1)(-3) = 0

=> 3p-3 = 21

=> 3p= 24

=> p= 8

therefore 0 is 8th term of the given AP

Answered by Nandzzz
6

Step-by-step explanation:

HLW...da....

HERE IS YOUR CORRECT ANSWER....

REFER TO THE ATTACHMENT.........

✌️✌️

Attachments:
Similar questions