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1000 DS section 9 #25

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1000 DS section 9 #25

by rookiez » Thu Jul 09, 2009 12:21 am
25. If x = 0. rstu, where r, s, t, and u each represent a nonzero digit of x, what is the value of x?
(1) r = 3s = 2t = 6u
(2) The product of r and u is equal to the product of s and t.

OA A
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Source: — Data Sufficiency |
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Re: 1000 DS section 9 #25

by Morgoth » Thu Jul 09, 2009 10:31 am
rookiez wrote:25. If x = 0. rstu, where r, s, t, and u each represent a nonzero digit of x, what is the value of x?
(1) r = 3s = 2t = 6u
(2) The product of r and u is equal to the product of s and t.

OA A
Statement I

Since r,s,t,u represent only single digit.

r = 6
s = 3*2
t = 2*3
u = 1

value of x = 0.6231

Sufficient.

Statement II

ru = st

2*4 = 4*2

2*2 = 4*1


Insufficient.

Hence A.
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Re: 1000 DS section 9 #25

by ssmiles08 » Thu Jul 09, 2009 11:10 am
rookiez wrote:25. If x = 0. rstu, where r, s, t, and u each represent a nonzero digit of x, what is the value of x?
(1) r = 3s = 2t = 6u
(2) The product of r and u is equal to the product of s and t.

OA A
I am super confused. If they say x = 0, then why would they be asking the value of x?

Does the question say if x =/= 0?
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Re: 1000 DS section 9 #25

by Morgoth » Thu Jul 09, 2009 11:16 am
ssmiles08 wrote:
rookiez wrote:25. If x = 0. rstu, where r, s, t, and u each represent a nonzero digit of x, what is the value of x?
(1) r = 3s = 2t = 6u
(2) The product of r and u is equal to the product of s and t.

OA A
I am super confused. If they say x = 0, then why would they be asking the value of x?

Does the question say if x =/= 0?
x is a decimal number

x = 0. rstu

rstu are single digit numbers
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