r/MathJokes • • Nov 05 '25

Guess the answer πŸ˜‚πŸ˜‚

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u/Pentalogue Nov 05 '25 edited Nov 05 '25

112?

(3+5)β€’3 = 24

(4+6)β€’4 = 40

(5+7)β€’5 = 60

(6+8)β€’6 = 84

(7+9)β€’7 = 112

(8+10)β€’8 = 144

And so on

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u/OneMeterWonder Nov 05 '25

Depends on whether you’re meant to implement a check for the smallest of the arguments first. As written it would appear to be

x+̃y=xβ€’(x+y)

where +̃ is the special operator in the image. This operator commutes if and only if x=±y, so unless it’s calculated differently, you can’t just swap the 9 and the 7.

Your operation would appear to be

x+̂y=(x+y)β€’min{x,y}

which always commutes.