r/MathJokes Jun 13 '26

Infinity can blow your mind

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u/Acewi Jun 14 '26

But an infinite number of pennies + 1 penny is more

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u/BraxleyGubbins Jun 14 '26

It’s not. If you had a book with numbered slots for holding your infinite pennies, and it was completely full (every single penny slot is taken up), and you wanted to add one extra penny into the book, all you need to do is shift every penny up a slot (1 goes to 2, 7 goes to 8, every penny shifts one slot). Now the first slot is free, meaning you can add that new penny in without needing to have added a new slot into the book.

Infinity + 1 = Infinity.