perplexus.info :: Probability : Set of Primes

Set of Primes (Posted on 2009-05-18)

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.

Submitted by Praneeth

Rating: 3.0000 (1 votes)

Solution: (Hide)

Refer to solution submitted by Robby Goetschalckx

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re(2): Solution	Robby Goetschalckx	2009-05-21 18:41:04
re: Solution	Ady TZIDON	2009-05-19 07:35:28
re(2): solution	Daniel	2009-05-18 12:01:42
re: solution	Robby Goetschalckx	2009-05-18 12:00:21
Solution	Robby Goetschalckx	2009-05-18 11:56:53
solution	Daniel	2009-05-18 11:56:47

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