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 numbers, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019