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Mathematical Problems

Postman Pat ★★

Postman Pat delivers the mail in the small village of Tenhouses. This village, as you already suspected, has only one street with exactly ten houses, numbered from 1 up to and including 10.

In a certain week, Pat did not deliver any mail at two houses in the village; at the other houses, he delivered mail three times each. Each working day he delivered mail at exactly four houses.

The sums of the house numbers where he delivered mail were:
on Monday: 18
on Tuesday: 12
on Wednesday: 23
on Thursday: 19
on Friday: 32
on Saturday: 25
on Sunday: he never works

The question: Which two houses did not get any mail that week?

The answer: Click here!

Copyright © 2002 E.R. van Veldhoven. All rights reserved.

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