The Queen of Hearts has lost her tarts! She asks each knave if he has eaten them, but how many of them are honest...
Multiply a sequence of n terms together. Can you work out when this product is equal to an integer?
Given that the number 2008 is the correct answer to a sum, can you find n?
A class raises money for charity by placing 10p pieces edge to edge in a 'silver line'. If the line was 25m long, how much money did they make?
How much lighter will £5 worth of 5p's be with these new lighter coins?
Mr Ross tells truths or lies depending on the day of the week. Can you catch him out?
How many numbers do you need to remove to avoid making a perfect square?
How many ways can you paint this wall with four different colours?
Alberta won't reveal her age. Can you work it out from these clues?
What could be the scores from five throws of this dice?
Weekly Problem 12 - 2014
Weekly Problem 44 - 2014
Weekly Problem 2 - 2015
"It would take 20 million years to fill Morecambe Bay from a bath tap". What does this imply is the approximate capacity of Morecambe Bay?
By drawing 5 horizontal and four vertical lines, one can form 12 rectangles. What is the greatest number of rectangles that can be formed by drawing 15 lines?
What is the remainder when 354972 is divided by 7?
In the multiplication table on the right, only some of the numbers have been given. What is the value of A+B+C+D+E?