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If x = 0. rstu, where r, s, t, and u each represent a [#permalink]
 24 Nov 2008, 03:43
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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 I don't understand what is asked in the question  . It's an OG(green one) question. Could any smart brains please help?
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Re: Data Sufficient [#permalink]
24 Nov 2008, 03:50
1) suff., only 0,6231 satisfies
2) insuff., can be 1236, 1326, 6231, 1212...
A
Last edited by atletikos on 24 Nov 2008, 03:52, edited 1 time in total.
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Re: Data Sufficient [#permalink]
24 Nov 2008, 03:51
The question says x = 0.rstu for e.g. 0.1234. With the information given, they are looking for us to find all four digits.
1) each of r, s, t, u are <10 (since they are digits in x)
if r=6u, then u must be 1 => you can find x .........suff
2) Doesnt help, ru=st, can be anything at all, specially since we dont know if rust can all be the same numbers or not........insuff
A
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Re: Data Sufficient [#permalink]
25 Nov 2008, 00:55
understood. thanks 
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Re: Data Sufficient [#permalink]
25 Nov 2008, 21:46
only u = 1 satisfies the condition of digits. if u=2, r becomes 12 and does not fit. Hence A
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Re: Data Sufficient
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25 Nov 2008, 21:46
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