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No Addition Allowed (Posted on 2009-12-14) Difficulty: 3 of 5
Without using addition, make five 6s to equal 30.
Without using addition, make six 7s to equal 42.

The calculations should be exact (no rounding functions). Any common symbols or operators other than addition are allowed.

Replacing addition with subtracting a negative is NOT a solution.

See The Solution Submitted by Brian Smith    
Rating: 2.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: triangular numbersBrian Smith2009-12-15 14:38:10
Some Thoughtstriangular numbersAdy TZIDON2009-12-15 05:56:22
SolutionAdditional SolutionsJustin2009-12-14 20:06:50
SolutionSolutionsDej Mar2009-12-14 17:22:21
SolutionsolutionCharlie2009-12-14 14:55:52
SolutionPOSSIBLE SOLUTIONSAdy TZIDON2009-12-14 13:44:57
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