Mathematical Fraction
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Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets () 
( 7 + 7) * (7 + 1/7)
–> 14 * (50/7)
–> 2 * 50
–> 100
How is (7 + 1/7) = (50 / 7) ??
Your Answer
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