Mathematics · 2025
JEE Main · 22 January 2025, Shift 2 · Q6
Suppose that the number of terms in an A.P. is 2 k, k ∈ N. If the sum of all odd terms of the A.P. is 40, the sum of all even terms is 55 and the…
Suppose that the number of terms in an A.P. is $\displaystyle 2 \mathrm{k}, \mathrm{k} \in \mathbf{N}$. If the sum of all odd terms of the A.P. is $\displaystyle 40$, the sum of all even terms is $\displaystyle 55$ and the last term of the A.P. exceeds the first term by $\displaystyle 27$, then k is equal to:
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 5$
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JEE Main 2025 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.