# Puzzles

## Archive

Show me a random puzzle**Most recent collections**

#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

## Tags

sequences star numbers routes polygons prime numbers time planes square roots clocks calculus surds shape multiplication crossnumbers partitions christmas percentages pascal's triangle people maths multiples rugby averages spheres factors number probability symmetry sum to infinity parabolas crosswords volume wordplay cube numbers cards menace quadratics bases complex numbers shapes functions integers coins colouring chalkdust crossnumber means squares dates area dodecagons triangle numbers odd numbers cryptic crossnumbers chess trigonometry ave factorials 3d shapes coordinates remainders doubling chocolate circles folding tube maps ellipses irreducible numbers books sums dice palindromes rectangles grids 2d shapes fractions angles digits logic algebra perimeter advent cryptic clues arrows lines differentiation proportion numbers geometry scales speed indices integration probabilty graphs perfect numbers games sport unit fractions mean balancing taxicab geometry floors division triangles money addition hexagons regular shapes square numbers## 24 December

Today's number is the largest possible remainder which can be obtained when dividing one of
the answers in this advent calendar by another answer smaller than it (not
including today's answer!).