Dice in a Corner
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
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?