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 Home > Paradoxes These problems may or may not have an actual solution. Some of them are flat out contradictions, some lead you into infinite loops of logic.
Puzzle: If you choose an answer to this puzzle at random, what is the probability of a correct guess?

a) 25%
b) 50%
c) 60%
d) 25%

1. Explain why the above puzzle is a paradox.
2. By introducing a single decimal point in one of the choices - can you convert this paradox into a solvable problem?

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