1.

How many terms are there in the AP 18,15½,13,...,-47?​

Answer»

Hello dear here is your answer.

The given sequence is an AP.

So,,

first TERM of an ap is=a =18

common deference =d =15 1/2-18

last term of an ap = a_n=-47

you have to USE this formula

a_n=a+(n-1)d

Then you have to find n

so, you will GET your answer.


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