mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

The sixth cent

You toss 6 fair coins, and I toss 5 fair coins. What is the probability that you get more heads than I do?

Show answer & extension

Archive

Show me a random puzzle
 Most recent collections 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019