Question

How to find the term of an AP from last ?
10th graders pls answer............

Answer 1

Step-by-step explanation:

use formula--a=l+(n-1)(-d)

you will get ans

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Answer 2

Just applied the formula to get term or sum

but if you are solving A.P. from last term

then the sign of difference will be changed

for example:-

if common difference is +2

the from last the common difference will be -3

hope it helps!!!