Advent calendar 2017

2 December

There are three cards; one number is written on each card. You are told that the sums of pairs of cards are 99, 83 and 102. What is the sum of all three cards?

Show answer

Tags: numbers


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


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


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