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JEE MAIN 2020
02-09-2020 S2
Question
If the sum of first 11 terms of an A.P., $\mathbf{a}_1, \mathbf{a}_2, \mathbf{a}_3, \ldots$ is $0\left(\mathbf{a}_1 \neq 0\right)$, then the sum of the A.P., $\mathbf{a}_1, \mathbf{a}_3, \mathbf{a}_5, \ldots, \mathbf{a}_{23}$ is $\mathbf{a}_1$, where $\mathbf{k}$ is equal to .
Select the correct option:
A
$-\frac{121}{10}$
B
$-\frac{72}{5}$
C
$\frac{72}{5}$
D
$\frac{121}{10}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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