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Price: $15.99
Format: Paperback / softback
ISBN13: 9780008290382
Published: September 2018

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This is a new book. Condition: Brand New.

A mathematical workout to rival Su Doku!

Dozens of addictive puzzles to challenge your mental arithmetic and deductive reasoning. Perfect for all number puzzles addicts looking for a challenge. Varying levels of difficulty are included to test your mettle.

Tetonor rules: each number in the main grid can be formed by adding or multiplying a pair of numbers in the strip below the grid. Each pair of numbers should be used twice: once as part of an addition and once as part of a multiplication. For example, a 10 and 24 in the main grid may be solved by the sums, 4 + 6 and 4 x 6, respectively. Enter each sum in the boxes below its answer. Any blanks in the strip must be deduced, bearing in mind the numbers are listed in ascending order.

Ideal for relaxing at home, on holiday or on the daily commute. Use your mental agility, logic and powers of deduction to tackle this collection of brainteasing puzzles from The Sunday Times.

60 Easy, 80 Medium and 60 Difficult puzzles included.

Book details and technical specifications

Format: Paperback / softback
ISBN13: 9780008290382
Published: September 2018

Number of pages: 272
Width: 129 mm
Height: 198 mm
Depth: 17 mm

Publisher: HarperCollins Publishers

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