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Permutations and Combinations question

2025 · 3 Apr · Shift 1 · Q50
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Permutations and Combinations question

2025 · 3 Apr · Shift 1 · Q50

JEE MainMathematicsPermutations and CombinationsNumerical+4 / −1
If the number of seven-digit numbers, such that the sum of their digits is even, is m⋅n⋅10n;m,n∈{1,2,3,…,9}m \cdot n \cdot 10^n ; m, n \in\{1,2,3, \ldots, 9\}m⋅n⋅10n;m,n∈{1,2,3,…,9}, then m+nm+nm+n is equal to ‾\underline{\hspace{2cm}}​
Numerical answer
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