Problem of the Day
A new programming or logic puzzle every Mon-Fri

Missing Number

40 32 72 12
30 24 54 09
54 ?  90 15

Permalink: http://problemotd.com/problem/missing-number/

Comments:

  • Anonymous - 10 years, 1 month ago

    40 -- And I'm guessing.

    reply permalink

  • Anonymous - 10 years, 1 month ago

    36?

    40 + 32 = 72 30 + 24 = 54 54 + 36 = 90

    Not sure what the 12... 09 and 15 are...

    reply permalink

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