mscroggs.co.uk
mscroggs.co.uk

subscribe

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

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

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

Archive

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