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More ways to get Braingle...

1999

Math brain teasers require computations to solve.

 

Puzzle ID:#28678
Fun:*** (2.47)
Difficulty:** (1.48)
Category:Math
Submitted By:lips*****
Corrected By:Winner4600

 

 

 



The year 1999 is special. Using the numbers 1, 9, 9 and 9, in that order, make the number 89. You may use brackets and any standard maths operation such as the square root, +, -, * and /. For example, 26 = -1 + 9 + 9 + 9.

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