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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## last weird question ##### This topic has 2 member replies ## last weird question explanations? i see 1 is sufficient. prime factors of 70 are 2, 5, 7 what about 2nd statement? why is that not sufficient? prime factors of 10 are 2 and 5. no other factors (i.e. 10 and 1 don't count as it says integers greater than 1) any help would be appreciated. Attachments This post contains an attachment. You must be logged in to download/view this file. Please login or register as a user. Legendary Member Joined 20 Jun 2007 Posted: 1153 messages Followed by: 2 members Upvotes: 146 Target GMAT Score: V50 flystud777 wrote: explanations? i see 1 is sufficient. prime factors of 70 are 2, 5, 7 what about 2nd statement? why is that not sufficient? prime factors of 10 are 2 and 5. no other factors (i.e. 10 and 1 don't count as it says integers greater than 1) any help would be appreciated. Statement I xyz=70 = 2*5*7 There is no other way 70 can be product 3 integers without using 1. Therefore, x+y+z = 14 Sufficient. Statement II 10x = 7yz CASE I x = 14, y=4, z=5 yz = 20 = 4*5 10*14 = 7*4*5 There is no restriction in the question why x cant be 14 CASE II x=7, y=2,z=5 7*10 = 7*2*5 Similarly, we can have infinite values for x , y and z Insufficient. Hence A is the answer. Newbie | Next Rank: 10 Posts Joined 02 Sep 2008 Posted: 9 messages Test Date: 10/20/2008 Target GMAT Score: 800 got it. thanks. • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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