Cows and Sheep
Use your logical reasoning to work out how many cows and how many sheep there are in each field.
Use your logical reasoning to work out how many cows and how many sheep there are in each field.
Each clue in this Sudoku is the product of the two numbers in adjacent cells.
How can Agent X transmit data on a faulty line and be sure that her message will get through?
Three equilateral triangles ABC, AYX and XZB are drawn with the point X a moveable point on AB. The points P, Q and R are the centres of the three triangles. What can you say about triangle PQR?
Can you hit the target functions using a set of input functions and a little calculus and algebra?