DS functions question

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varunkh70: Senior | Next Rank: 100 Posts; Posts: 51; Joined: Thu May 01, 2008 7:26 am; Thanked: 1 times

by varunkh70 » Sun Aug 09, 2009 6:48 am

If f(n)=k/n then how much is f(3)?
(1) F(12) = ½
(2) F(root 6) = root 6

Source: Beat The GMAT — Data Sufficiency | Sun Aug 09, 2009 6:48 am

real2008: Legendary Member; Posts: 527; Joined: Thu May 01, 2008 12:06 am; Thanked: 7 times

by real2008 » Sun Aug 09, 2009 7:14 am

varunkh70 wrote:If f(n)=k/n then how much is f(3)?
(1) F(12) = ½
(2) F(root 6) = root 6

f(12)=1/2=6/12; k=6 so f(3)=6/3=2

f(root6)=root6= 6/root6; k=6 so f(3)=6/3=2

Hence, D

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