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# Are you a Genius, then prove it???

If you are a genius, you can solve it easily.

Use three 9's in a mathematical expression such that it forms the number one. You are not allowed to divide or multiply them.

Note by Yashasvini Sharma
3 years ago

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$$9^{9-9}$$. I guess I'm a brilliant genius. :D · 3 years ago

yeah..that seems to be plausible · 3 years ago

9^{9-9} · 1 year, 11 months ago

[log99.9] · 2 years, 8 months ago

2) sgn (999) · 3 years ago

1) sgn (9+9+9) · 3 years ago

9^(9-9), lol im a genius :P · 3 years ago

great, genius people · 3 years ago

9^{9-9} · 3 years ago

i am a budding genius. :-p · 3 years ago