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joyseychow
- Master | Next Rank: 500 Posts
- Posts: 125
- Joined: Mon Dec 15, 2008 9:24 pm
Set S consists of n distinct positive integers, none of which is greater than
12. What is the greatest possible value of n if no two integers in S have a
common factor greater than 1?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 11
OA is C. Why not [spoiler]B? Since there is only 5 primes between 1-12.[/spoiler]
12. What is the greatest possible value of n if no two integers in S have a
common factor greater than 1?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 11
OA is C. Why not [spoiler]B? Since there is only 5 primes between 1-12.[/spoiler]
