Can you use the information to find out which cards I have used?
15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?
Which countries have the most naturally athletic populations?
How would you design the tiering of seats in a stadium so that all spectators have a good view?
This problem explores the biology behind Rudolph's glowing red nose, and introduces the real life phenomena of bacterial quorum sensing.
Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?
A function pyramid is a structure where each entry in the pyramid is determined by the two entries below it. Can you figure out how the pyramid is generated?
How can you change the surface area of a cuboid but keep its volume the same? How can you change the volume but keep the surface area the same?
In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.
