From the Sum Back to the Terms

Arithmetic Progressions

From the Sum Back to the Terms

CBSE Class 10 · Solve it one decision at a time. A wrong pick earns a nudge, never the answer.

Step 1 of 5

The problem

The sum of the first nn terms of an AP is Sn=2n2+7n.S_n = 2n^2 + 7n. Which term of this AP is 101101?

Step 1 · Your move

What is the first term a1a_1?

Sn=2n2+7nS_n = 2n^2 + 7n
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