P3 Problem Sums

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P3 Problem Sums

by Joanne Lim
(Singapore)

Janet turned to some pages of a story book she was reading. Each of the pages had a 3-digit page number. The digits on the page on the left added to 14 and the digits on the page on the right added to 15. How many possible pairs of page numbers are there? (Note : the story book does not contain more than 300 pages.)

Zach's Answer:

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