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I Got Your Number (Posted on 2004-04-18) Difficulty: 3 of 5
Lou Zerr is trying to pick up a woman at a bar. The woman, Denise, is reluctant to give out her number, but she gives Lou a clue.

"My sister, Elise and I have the same digits in our phone numbers, just in reverse order. Elise's number is also evenly divisible by mine."

What is Denise's phone number?

(Note: this IS NOT a real exchange, as far as I know. Assume the phone number has 10 digits: 7 digit number + 3 digit area code.)

No Solution Yet Submitted by Bob Genisot    
Rating: 3.6000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(5): Another non-trivial solution | Comment 12 of 15 |
(In reply to re(4): Another non-trivial solution by fwaff)

"So in the context of the question does 'evenly divisible' mean that it divides with no remainder (as Penny says) or that it divides with no remainder AND an even answer?"

How should I know?

You don't need to answer that.


  Posted by Tristan on 2004-04-20 20:00:34
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