Mathematics · 2025
JEE Main · 3 April 2025, Shift 1 · Q21
If the number of seven-digit numbers, such that the sum of their digits is even, is m · n · 10^n; m, n ∈{1,2,3, …, 9}, then m+n is equal to ____
If the number of seven-digit numbers, such that the sum of their digits is even, is $\displaystyle m \cdot n \cdot 10^n ; m, n \in\{1,2,3, \ldots, 9\}$, then $\displaystyle m+n$ is equal to $\displaystyle \_\_\_\_$
Official answer
From NTA’s final answer key for this paper.
14
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JEE Main 2025 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.