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

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

Archive

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