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Director  Joined: 16 May 2014
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GRE Math Challenge #11- x = 350,000 y = 45,000 [#permalink]
Expert's post 00:00

Question Stats: 50% (00:56) correct 50% (00:33) wrong based on 18 sessions
Level 170 question

x = 350,000

y = 45,000
Attachment: q1_001.png [ 7.81 KiB | Viewed 1946 times ]
[Reveal] Spoiler: OA

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If you find this post helpful, please press the kudos button to let me know ! Director  Joined: 16 May 2014
Posts: 595
GRE 1: Q165 V161 Followers: 94

Kudos [?]: 456 , given: 64

Re: GRE Math Challenge #11 [#permalink]
Expert's post

Hint

Go through the concepts in the following link to accurately answer the above question

divisibility-factors-164.html
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If you find this post helpful, please press the kudos button to let me know !  Intern Joined: 18 Jun 2014
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Re: GRE Math Challenge #11 [#permalink]
1
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No. of positive divisors of x = 350,000 => 350000 = (2^4)*(5^5)*(7^1) => no. of divisors = (4+1)*(5+1)*(1+1) = 5*6*2 = 60
y = 45,000 => 45000 = (2^3)*(3^2)*(5^4) => no. of divisors = (3+1)*(2+1)*(4+1) = 4*3*5 = 60

Hence, the correct answer would be (C) Manager Joined: 27 Sep 2017
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Re: GRE Math Challenge #11- x = 350,000 y = 45,000 [#permalink]
1
KUDOS
soumya1989 wrote:
Level 170 question

x = 350,000

y = 45,000
Attachment:
q1_001.png

In this stem we are told that x=350,000=5*7*$$10^{4}$$=$$2^{4}$$*$$5^{5}$$*7

Therefore, the positive divisors of 350,0000=(4+1)(5+1)(1+1)=60

y=45,000=9*5*$$10^{3}$$=$$3^{2}$$*$$5^{4}$$*$$2^{3}$$

Thus, the positive divisors of 45,000=(2+1)*(4+1)*(3+1)=60

Hence, the ans is C. Re: GRE Math Challenge #11- x = 350,000 y = 45,000   [#permalink] 06 Mar 2018, 23:30
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# GRE Math Challenge #11- x = 350,000 y = 45,000  Question banks Downloads My Bookmarks Reviews Important topics  Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.