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Set of Primes (Posted on 2009-05-18) Difficulty: 2 of 5
Let X be set of primes from 1 to 100, i.e., X: {2,3,5,7,....,97} and Y be set of numbers whose every prime divisor belongs to set X. A number from Y has exactly 24 positive divisors, find the probability it has exactly 3 distinct prime divisors.

See The Solution Submitted by Praneeth    
Rating: 3.0000 (1 votes)

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Hints/Tips re: Solution | Comment 5 of 6 |
(In reply to Solution by Robby Goetschalckx)

    re:13800/6900

you mean  13800+6900


  Posted by Ady TZIDON on 2009-05-19 07:35:28
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