Multiple choice general knowledge sports

if m and n are two distinct non zero positive integers such that m is less than n and m*n=999919. . . . . . . . . m is not equal to 1 then sum of digits of m is

  1. 10

  2. 19

  3. 43

  4. no solution
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The product 999919 factors into 991 × 1009 (both are prime numbers). Since m < n and m ≠ 1, m must be 991. The sum of its digits is 9 + 9 + 1 = 19.

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