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Puzzle of the Day

These puzzles are also printed in Eight days a week, a booklet published by the Association of Teachers of Mathematics.The Association of Teachers of Mathematics

To get to the store room Mandy had to go up a staircase of 21 steps, along a short passage and then down a staircase of 14 steps. How many more steps up than down did she take on the journey there and back ?

Answer: the same

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