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tahirb7: Newbie | Next Rank: 10 Posts; Posts: 5; Joined: Sat Jan 05, 2008 8:02 am; Location: NYC

Help - GMAT Prep - greatest common factor, least common mul

by tahirb7 » Sat Jan 12, 2008 2:16 pm

Please help, can't figure this one out.

If x and y are positive integers, what is the value of xy?

(1) the greates common factor of x and y is 10
(2) the least common multiple of x and y is 180.

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Source: Beat The GMAT — Data Sufficiency | Sat Jan 12, 2008 2:16 pm

rchadha7: Junior | Next Rank: 30 Posts; Posts: 17; Joined: Tue Oct 09, 2007 12:34 pm; Location: Jersey City

by rchadha7 » Sat Jan 12, 2008 4:42 pm

C

product of 2 numbers is = lcm * gcf

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