mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

22 December

Today's number is a palindrome. Today's number is also the number of palindromes between 111 and 11111 (including 111 and 11111).

14 December

What is the only palindromic three digit prime number which is also palindromic when written in binary?

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020