Double With 1 to 9
Can you find a number and its double using the digits $1$ to $9$ only once each?
Can you find a number and its double using the digits $1$ to $9$ only once each?
Lauren and Thomas tell their ages in terms of sums of squares. Can you work out how old they really are?
The digits 1-9 have been written in the squares so that each row and column sums to 13. What is the value of n?
Can you choose one number from each row and column in this grid to form the largest possibe product?
Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?
A man has 5 coins in his pocket. Given the clues, can you work out what the coins are?
This grid can be filled so that each of the numbers 1, 2, 3, 4, 5 appears just once in each row, column and diagonal. Which number goes in the centre square?
How many 10-digit numbers containing only 1s, 2s and 3s can you write?