Before you leave...
Take 20% off your first order
20% off
Enter the code below at checkout to get 20% off your first order
Discover summer reading lists for all ages & interests!
Find Your Next Read

All the puzzles in this book take the form of number sequences and always some of the terms are missing.
Sometimes the missing terms are at the end and the puzzle is to work out how the sequence continues.
Sometimes there are gaps to fill within it.
Logical thinking is needed to discover the hidden rules and the book systematically explains how to set about solving this intriguing type of puzzle.
Thanks for subscribing!
This email has been registered!
Take 20% off your first order
Enter the code below at checkout to get 20% off your first order