There are maths puzzles that have not been solved. Any puzzle that has an answer cannot be harder than one that mathematicians still have not solved.
Even amongst puzzles with answers, what you may consider hard may be easy to someone else, and conversely.
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There are many maths puzzles that have not been solved. Any puzzle that has an answer cannot be harder than one that mathematicians still have not solved. So a second hardest puzzle cannot exist. Even amongst puzzles with answers, what you may consider hard may be easy to someone else, and conversely.
The hardest question is too difficult to conjure.
That is based on opinion.
What is the exact value of pi in figures.
what is the percentage of the gods existence in this world ? its 23846.63542