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Tom's address (Posted on 2002-05-30) Difficulty: 4 of 5
John is tryng to locate Tom's house. All he knows is that Tom lives on a street with houses numbered from 8 to 100.

John asks Tom:

"Is your house number bigger than 50?"

Tom answers him, but he lies. (John doesn't know that he's lying) John continues to ask:

"Is your house number a multiple of 4?"

Tom answers and again, he lies. Then John asks:

"Is your house number the square of an integer?"

Tom answres, but this time he tells the truth. Finally, John asks:

"Is the first digit of your house number 3?"

After Tom answers (we don't know if he lied or not) John declares Tom's house number, but he is wrong! What is Tom's house number?

See The Solution Submitted by Half-Mad    
Rating: 4.2857 (14 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
answerK Sengupta2008-02-14 14:48:23
SolutionSolutionDej Mar2008-02-14 03:43:36
Solution method suggestionRebecca Jaffe2005-09-16 07:18:06
re: Eureka oopsCassandra Wallace2003-02-12 17:20:08
EurekaCassandra Wallace2003-02-12 17:16:55
re: The answer is...Freshter2002-05-31 22:16:47
The answer is...Freshter2002-05-31 22:12:11
My guessHappy2002-05-30 12:02:28
Hints/TipsTwo storey complex (hints only -- solution to follow)TomM2002-05-30 12:00:38
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