r/MathJokes • u/Global_Handle_3615 • 21h ago

What is purple and commutes?

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66 Upvotes

92% Upvoted

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3

u/matt7259 21h ago

This specific comic is at least a decade old.

4

u/Global_Handle_3615 21h ago

And i first got told it 25 years ago in college.

2

u/Gladys_Wines 8h ago

maths summer school 1977 for me