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

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

Archive

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