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.
(In reply to
re: solution by Robby Goetschalckx)
yes, I agree I made a miscalculation and my corrected calcuations agree with yours

Posted by Daniel
on 20090518 12:01:42 