Short Problem Showcase
Did you know we have a huge archive of short problems?
We have decide to feature some of our favourites, and if this whets your appetite, check out the full collection.
We have decide to feature some of our favourites, and if this whets your appetite, check out the full collection.
Equal Means Age 14 to 16 Short
Challenge Level
Challenge Level
What value of x makes the mean of the first three numbers in this list equal to the mean of the other four?
Red Card Blue Card Age 11 to 14 Short
Challenge Level
Challenge Level
Can you arrange the red and blue cards so that the rules are all followed?
Common Remainder Age 11 to 14 Short
Challenge Level
Challenge Level
144 divided by n leaves a remainder of 11. 220 divided by n also leaves a remainder of 11. What is n?
Magic 7 Age 11 to 14 Short
Challenge Level
Challenge Level
Can you complete this magic square with the numbers from 7 to 15?
Trapezium Arch Age 11 to 14 Short
Challenge Level
Challenge Level
Weekly Problem 27 - 2007
Ten stones form an arch. What is the size of the smallest angles of the trapezoidal stones?
Ten stones form an arch. What is the size of the smallest angles of the trapezoidal stones?
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.