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| A Quicky III (Posted on 2014-04-09) |
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If each of the a,b,c,d is a decimal digit - for how many ordered quadruplets (a,b,c,d) is
the sum S= a+b+6c+d divisible by 3 ?
Answer: within 20 sec.
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No Solution Yet
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Submitted by Ady TZIDON
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Rating: 5.0000 (1 votes)
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re: Epic Fail
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 | Comment 2 of 9 | 
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(In reply to Epic Fail by Steve Herman)
OK, now try 20 min.
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