mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Tetrahedral die

When a tetrahedral die is rolled, it will land with a point at the top: there is no upwards face on which the value of the roll can be printed. This is usually solved by printing three numbers on each face and the number which is at the bottom of the face is the value of the roll.
Is it possible to make a tetrahedral die with one number on each face such that the value of the roll can be calculated by adding up the three visible numbers? (the values of the four rolls must be 1, 2, 3 and 4)

Show answer & extension

Tags: dice
If you enjoyed this puzzle, check out Sunday Afternoon Maths XXXI,
puzzles about dice, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018


List of all puzzles

Tags

elections logic square roots people maths taxicab geometry grids digital clocks means digits chocolate percentages 3d shapes ave remainders sums integers geometry tiling hexagons ellipses trigonometry palindromes christmas prime numbers mean algebra integration chalkdust crossnumber indices volume lines products shape symmetry menace cryptic clues time proportion unit fractions range crossnumber quadratics squares crossnumbers averages surds spheres routes graphs dominos calculus factorials combinatorics fractions triangle numbers perimeter books number rectangles colouring circles quadrilaterals angles irreducible numbers cards regular shapes floors coordinates dates folding tube maps polygons addition partitions money perfect numbers multiples 2d shapes median sequences sum to infinity chess numbers square numbers shapes rugby pascal's triangle cryptic crossnumbers multiplication probability sport bases arrows odd numbers advent star numbers the only crossnumber functions crosswords scales triangles dodecagons complex numbers balancing gerrymandering area speed coins dice division planes parabolas cube numbers games wordplay clocks differentiation factors doubling probabilty

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021