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A simple logical question (Posted on 2007-07-27) Difficulty: 2 of 5
If d(x) denotes the no. positive divisors of x and d(d(d(x))), d(d(x)), d(x) and x can be arranged in 12 different ways. Find possible values of n(x), where n(x) is no. of prime factors of x. Also find possible values of x less than 100.

See The Solution Submitted by Praneeth    
Rating: 3.3333 (3 votes)

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re: computer exploration--lacking proof--spoilers | Comment 3 of 4 |
(In reply to computer exploration--lacking proof--spoilers by Charlie)

By x is prime factor of A, it is meant that x is prime and x is a divisor of A. Check this 
http://en.wikipedia.org/wiki/Prime_factor. Sorry, for not giving u the definition.\
For example, prime factors for 12 are 2 and 3 only.

Edited on July 30, 2007, 9:17 am
  Posted by Praneeth on 2007-07-30 09:15:42

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