For the AP: -3,-7,-11 can we find directly a30-a20 without actually finding a30 and a20 - Maths - Arithmetic Progressions

Question

For the AP: -3,-7,-11 can we find directly a30-a20 without actually
finding a30 and a20 ? Give reasons for ur answer Experts please
answer and write the reason too in a sentence form including the
steps of the sum

Varun.Rawat · Accepted Answer

Refer the following link for the answer similar to your query :

https://www meritnation
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For the AP: -3,-7,-11.... can we find directly a30-a20 without actually finding a30 and a20 ? Give reasons for ur answer. Experts please answer and write the reason too in a sentence form including the steps of the sum.