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# If a 3-digit integer is selected at random from the integers

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Manager
Joined: 30 May 2003
Posts: 92
Location: Toronto
Followers: 1

Kudos [?]: 1 [0], given: 0

If a 3-digit integer is selected at random from the integers [#permalink]  25 Aug 2003, 19:26
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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
13. If a 3-digit integer is selected at random from the integers 100 through 199, inclusive, what is the probability that the first digit and the last digit of the integer are each equal to one more than the middle digit?
Manager
Joined: 10 Jun 2003
Posts: 210
Location: Maryland
Followers: 2

Kudos [?]: 4 [0], given: 0

The only number that satisfies this is 101. Since there are 100 numbers from 100-199 inclusive, then the probability is 1/100.
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Sept 3rd

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