Category: Puzzles

Bowling pins

Circle Regions

Put n points on the circumference of a circle. Join each point to every other one with a straight line. […]

Bike

Leapfrog

Adam and Brian decide to cycle from Adam’s house to Brian’s house 8 km away. Unfortunately Brian has left his […]

Square game

Circle Square

The diagram shows four circles of radius 1/4 in a unit square. A circle can fit in the gap in […]

Bee

Beeline two

A bee is sitting at a distance, d, from a man. At time t=0 the bee pursues the man at […]

Bee on flower

Beeline one

A freight train 200m long travels along a straight track at constant speed. In the time it takes the train […]

Chicken Nuggets

Chicken Nuggets

At a fast-food takeaway you can order chicken nuggets in boxes containing six, nine or twenty nuggets. What is the […]

snow scene

Snow Plough

One day it started snowing steadily. A snow-plough started out at noon, going two miles in the first hour and […]