Mathematics · 2020
JEE Main · 8 January 2020, Shift 2 · Q57
If the 10^th term of an A.P. is 1/20 and its 20^th term is 1/10, then the sum of its first 200 terms is:
If the $\displaystyle 10^{\text {th }}$ term of an A.P. is $\displaystyle \frac{1}{20}$ and its $\displaystyle 20^{\text {th }}$ term is $\displaystyle \frac{1}{10}$, then the sum of its first $\displaystyle 200$ terms is :
Official answer
(4)
$\displaystyle 100 \frac{1}{2}$
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.