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Mathematical Puzzles


Difficulty: MediumPuzzle 5

Puzzle IconA friend of mine drove from Aardvark to Beeville.

On the first day they travelled 1/3 of the distance.

On day two they travelled 1/2 of the remaining distance.

On day three they travelled 2/3 of the remaining distance.

On day four, after covering 3/4 of the remaining distance, they were still 5 miles away from Beeville.

How many miles had they covered so far?

[Ref: ZNKP] Copyright © Kevin Stone

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Difficulty: MediumPuzzle 6

Puzzle IconImagine a grid comprising 20 X 20 squares.

How many squares, of any size, in total?

[Ref: ZOIV]

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Difficulty: MediumPuzzle 7

Puzzle IconMy local library decided to hand out some of its old books to the 1,400 people who lived in the town.

To each library member they offered 6 books, and to each non-member they offered 4 books.

If only half of the members, and three quarters of the non-members, accepted the books, how many books were given away?

[Ref: ZNXG] Copyright © Kevin Stone

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Difficulty: MediumPuzzle 8

Here is a curious grid, the sums of the shapes are shown at the end the row and at the base of each column.

What is the missing sum? What are the different shapes worth?

Puzzle Grid

[Ref: ZJFC] Copyright © Kevin Stone

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