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Mr Smith and Mr Jones are two maths teachers, who meet
up one day.
Mr Smith lives in a house with a number between 13 and 1300.
He informs Mr Jones of this fact, and challenges Mr Jones
to work out the number by asking closed questions.
Mr Jones asks if the number is bigger than 500. Mr Smith
answers, but he lies.
Mr Jones asks if the number is a perfect square. Mr Smith
answers, but he lies.
Mr Jones asks if the number is a perfect cube.
Mr Smith answers and (feeling a little guilty) tells the
truth for once. Mr Jones says he knows that the number is
one of two possibilities, and if Mr Smith just tells him
whether the second digit is 1, then he'll know the answer.
Mr Smith tells him and Mr Jones says what he thinks the
number is.
He is, of course, wrong.
What is the number of Mr Smith's house?
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