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Four sevens and one one. (Posted on 2010-09-06) Difficulty: 1 of 5
Using four sevens (7,7,7,7) and a one (1) create the number 100.
You can use not more than three out of the usual mathematical operations (+, -, x, /, sqrt and power) and any amount of brackets.

See The Solution Submitted by Ady TZIDON    
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Question question | Comment 1 of 7
Are we allowed to use a decimal point in creating out numbers? If so, would we also have to acknowledge leading zeros? For example, would .1 be a valid value to use in our calculations, or would that be considered 0.1 and invalid in our case?
  Posted by Justin on 2010-09-06 15:53:00
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