Problem 44786. Lunar Arithmetic (Multiplication)

OEIS link for a description of lunar arithmetic

Simply take the larger digit when adding and take the smaller digit when multiplying.

Example

        15866
     X    147
     _________
        15766
       14444
    + 11111
    __________
      1145766
Solve

Solution Stats

32.53% Correct | 67.47% Incorrect
Last Solution submitted on Oct 31, 2025

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