vaivish Master | Next Rank: 500 Posts View User Profile Posts: 371 Joined: Tue Apr 29, 2008 10:16 am Thanked: 6 times Followed by:1 members prime number by vaivish » Thu Jul 31, 2008 1:08 pm . How many prime factors does positive integer N have? (1) N/5 has a prime number. (2) 3N^2 has two different prime number. OA is [/spoiler]B[spoiler][/spoiler] Top Quote
