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Name: Unknown
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Date: Around 1993


Question:
I have got a math/logic teaser: A census taker goes to a house for some information. The lady says she has 3 kids, and the product of their ages is 36. The sum of their ages is equal to the address next door. He goes and comes back for more information and she says the oldest one is asleep upstairs. What are their ages?



Replies:
Make a list of all triplets of positive integers whose product is 36. By each triplet write its sum. Do not forget that two kids could be twins! Note that only two triplets have the same sum. Since the census taker had to return for more information, the address next door must have been that sum. I will let the reader take the final step in the solution!



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