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Too many fours and sixes (Posted on 2010-08-07) Difficulty: 2 of 5
Each of A and B is a tridecimal (base 13) positive integer, where A is formed by writing the digit 4 precisely 666 times and, B is formed by writing the digit 6 precisely 666 times.

Determine the distinct digits that appear in the tridecimal representation of the product A*B.

Note: For an extra challenge, solve this problem using only pencil and paper.

No Solution Yet Submitted by K Sengupta    
Rating: 3.5000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPaper SolutionJoshua2010-08-10 09:55:42
Some Thoughtsre: SolutionAdy TZIDON2010-08-08 11:04:43
SolutionSolutionBrian Smith2010-08-07 23:13:19
Solutioncomputer solution and partial explanationCharlie2010-08-07 14:41:52
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