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Guess my number (Posted on 2004-09-24) Difficulty: 2 of 5
I'm thinking of a number.
  • if it is not a multiple of 4, then it is between 60 and 69
  • if it is a multiple of 3 it is between 50 and 59
  • if it is not a multiple of 6 it is between 70 and 79.
What is the number?

See The Solution Submitted by SilverKnight    
Rating: 2.8571 (14 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution to Guess My Number | Comment 6 of 22 |
The answer is 76.  If it were a multiple of 3 it also has to be a multiple of 4 and 6 (otherwise the ranges don't match up, which is impossible, given the range for multiples of 3.  If it were a multiple of 6 it would be a multiple of 3.  So it is not a multiple of 6.  But it must be a multiple of 4, else it would have to be in two separate ranges, which is impossible.  So the only number possible is 76. 
  Posted by Ron on 2004-09-24 12:23:02
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