bonanova Posted June 25, 2013 Report Share Posted June 25, 2013 I saw a clock the other day with only 9's on its face. Thirty-six 9's in all, three each at the twelve hour-markers. Can you design such a clock face? That is, express each of the numbers 1-12 using three 9's Along with standard math symbols. Extra credit for three different expressions for each hour. Quote Link to comment Share on other sites More sharing options...

0 TimeSpaceLightForce Posted June 25, 2013 Report Share Posted June 25, 2013 1: 9^(9-9) 2: (9+9)/9 3: (sqrt9^sqrt9)/9 4: (9+sqrt9)/sqrt9 5: 6: (9+9)/sqrt9 7: 8: 9-9/9 9: 9x9/9 10 :9+9/9 11 :99/9 12: 9+9/sqrt9 Quote Link to comment Share on other sites More sharing options...

0 TimeSpaceLightForce Posted June 25, 2013 Report Share Posted June 25, 2013 5: sqrt9! - 9/9 7: sqrt9! + 9/9 Quote Link to comment Share on other sites More sharing options...

0 James33 Posted June 25, 2013 Report Share Posted June 25, 2013 1. sqrt(9)-(sqrt(9)!/sqrt(9)) 2. (sqrt(9)+sqrt(9))/sqrt(9) 3. sqrt(9)+sqrt(9)-sqrt(9) 4. sqrt(9)+(9/9) 5. sqrt(9)+(sqrt(9)!/sqrt(9)) 6. sqrt(9)!+9-9 7. 9-(sqrt(9)!/sqrt(9)) 8. 9-(sqrt(9)/sqrt(9)) 9. 9+9-9 10. 9+(sqrt(9)/sqrt(9)) 11. 9+(sqrt(9)!/sqrt(9)) 12. 9+9-sqrt(9)! Quote Link to comment Share on other sites More sharing options...

0 Magic_luver102 Posted June 25, 2013 Report Share Posted June 25, 2013 (edited) (9-9)^9 Edited June 25, 2013 by Magic_luver102 Quote Link to comment Share on other sites More sharing options...

0 DeGe Posted July 12, 2013 Report Share Posted July 12, 2013 Quote Link to comment Share on other sites More sharing options...

0 bonanova Posted July 14, 2013 Author Report Share Posted July 14, 2013 Great job all. Quote Link to comment Share on other sites More sharing options...

## Question

## bonanova

I saw a clock the other day with only 9's on its face.

Thirty-six 9's in all, three each at the twelve hour-markers.

Can you design such a clock face?

That is, express each of the numbers 1-12 using three 9's

Along with standard math symbols.

Extra credit for three different expressions for each hour.

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