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 

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

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

Archive

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