Maths on the Back of an Envelope: Clever Ways to (Roughly) Calculate Anything

by Rob Eastaway

Book Overview

'Another terrific book by Rob Eastaway' SIMON SINGH

'A delightfully accessible guide to how to play with numbers' HANNAH FRY

How many cats are there in the world?

What's the chance of winning the lottery twice?

And just how long does it take to count to a million?

Learn how to tackle tricky maths problems with nothing but the back of an envelope, a pencil and some good old-fashioned...

• Format: Paperback
• Language: English
• ISBN: 0008444498
• ISBN13: 9780008444495
• Release Date: June 2021
• Publisher: HarperCollins
• Length: 208 Pages
• Weight: 0.35 lbs.
• Dimensions: 0.6" x 5.0" x 7.7"