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# Number X is chosen at random from the set of positive

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Senior Manager
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 9 [0], given: 0

Number X is chosen at random from the set of positive [#permalink]  18 Dec 2003, 14:51
Number X is chosen at random from the set of positive integers less than 10 .what is the probability that (9/x)>x ?
A.1/5
B.2/3
C.7/9
D.1/3
E.2/9
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shubhangi

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4313
Followers: 27

Kudos [?]: 216 [0], given: 0

Set of numbers is: 2,4,6,8,10 --> 5 possible numbers
9/x > x ---> 9 > x^2
Only 2 satisfies this inequality
Thus, 1 chance out of 5
Senior Manager
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 9 [0], given: 0

_________________

shubhangi

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4313
Followers: 27

Kudos [?]: 216 [0], given: 0

oops, I misread the question. E is the answer and I'm sure 100% this time

Set is 1 to 9.
and you can get either 1 or 2 that satisfies the equation 9>x^2
so 2/9
Director
Joined: 13 Nov 2003
Posts: 971
Location: Florida
Followers: 1

Kudos [?]: 32 [0], given: 0

2/9.
possible values 1,2 for x^2<9
Senior Manager
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 9 [0], given: 0

Yup!! Right this time.
_________________

shubhangi

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