Pub date: available now

A fresh and fun approach to numbers from the bestselling publishers of I Used to Know That and I Before E.

As Easy As Pi is an entertaining, informative and accessible guide to the world of numbers, written for those who love numbers – and those who don’t – and uncovers a great deal of lore and intriguing information, including numerical facts, myths, and rules to remember.

Think you’re up to the challenge? Then why not try our mini numbers quiz...

Q1: Which of these is not one of the Seven Wonders of the Ancient World?
a. The Pharos at Alexandria
b. The Colossus of Rhodes
c. The Parthenon in Athens

Q2. Which single-digit number is lucky in China?
a. 4
b. 7
c. 8

Q3. Which of the three Roman numerals is largest?
a. V
b. D
c. C