If x is to be selected at random from set T, what is the : DS Archive
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# If x is to be selected at random from set T, what is the

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If x is to be selected at random from set T, what is the [#permalink]

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17 Nov 2009, 21:45
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If x is to be selected at random from set T, what is the probability that x/4 -5 < 0?

(1). T is a set of 8 integers
(2). T is contained in the set o fintegers from 1 to 25, inclusive.
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Manager
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Kudos [?]: 256 [0], given: 1

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17 Nov 2009, 23:34
for x/4-5<0; x<20
Stem1:
As stem 1 doesn’t giving any information on values. The problem cannot be solved

Stem2:
Given that T is contained in the set of integers from 1 to 25 But doesn’t give any information on number of elements in T. hence cannot be solved .

Combined:
Combined, we get the number of elements in T but not the values of the element. Hence cannot be solved

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Kudos [?]: 15 [0], given: 11

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18 Nov 2009, 19:04

The numbers 1-19 make the inequality true. However, it is unclear which numbers 20-25, if any, are contained in Set T making it not able to be solved.
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Re: Trap question: DS   [#permalink] 18 Nov 2009, 19:04
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