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problem
Stair Climb
11 to 14
Three people run up stairs at different rates. If they each start from a different point - who will win, come second and come last?
problem
Other Side
11 to 14
Weekly Problem 8 - 2016
Can you work out the size of the angles in a quadrilateral?
Can you work out the size of the angles in a quadrilateral?
problem
Cubes on a Cube
11 to 14
Weekly Problem 26 - 2016
A cube has each of its faces covered by one face of an identical cube, making a solid as shown. What is the surface area of the solid?
A cube has each of its faces covered by one face of an identical cube, making a solid as shown. What is the surface area of the solid?
problem
Six Circles
11 to 14
In the diagram, six circles of equal size touch adjacent circles and the sides of the large rectangle. What is the perimeter of the large rectangle?
problem
Hillwalking
14 to 16
Andrew walks along a flat path, then up and down a hill, then back along the path. Is it possible to work out how far he has walked?
problem
Knockdown
11 to 14
Weekly Problem 51 - 2016
Pegs numbered 1 to 50 are placed in a row. Alternate pegs are knocked down, and this process is repeated. What is the number of the last peg to be knocked down?
Pegs numbered 1 to 50 are placed in a row. Alternate pegs are knocked down, and this process is repeated. What is the number of the last peg to be knocked down?
problem
Peter's Primes
14 to 16
Peter wrote a list of all the numbers that can be formed by changing one digit of the number 200. How many of Peter's numbers are prime?
problem
Triangular Algebra
14 to 16
Weekly Problem 26 - 2017
The angles in the triangle are shown in the diagram in terms of x and y. If x and y are positive integers, what is the value of x+y?
The angles in the triangle are shown in the diagram in terms of x and y. If x and y are positive integers, what is the value of x+y?