mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Doubling cribbage

Brendan and Adam are playing high stakes cribbage: whoever loses each game must double the other players money. For example, if Brendan has £3 and Adam has £4 then Brendan wins, they will have £6 and £1 respectively.
Adam wins the first game then loses the second game. They then notice that they each have £180. How much did each player start with?

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths LI,
puzzles about money, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026