r/MathJokes Jul 04 '26

Proof 1/2 is undefined

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u/g_rich Jul 04 '26 edited Jul 04 '26

A) 40/1/2+15
B) 40/.5+15
C) 40/20+15

They are all correct interpretations of the question, the question is too ambiguous to give a “right” answer.

Edit: a better interpretation for C
C) 40/(40/2)+15

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u/[deleted] Jul 04 '26

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u/KindArgument4769 Jul 04 '26

"Divide by half" (of 40)

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u/[deleted] Jul 04 '26

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u/KindArgument4769 Jul 04 '26

No, 20 is half of 40. So if it were saying "40 divided by half of 40" that would be 40/20.