mscroggs.co.uk
mscroggs.co.uk
Click here to win prizes by solving the mscroggs.co.uk puzzle Advent calendar.
Click here to win prizes by solving the mscroggs.co.uk puzzle Advent calendar.

subscribe

Sunday Afternoon Maths XXXIII

 Posted on 2014-11-02 

Fair dice

Timothy and Urban are playing a game with two six-sided dice. The dice are unusual: Rather than bearing a number, each face is painted either red or blue.
The two take turns throwing the dice. Timothy wins if the two top faces are the same color, and Urban wins if they're different. Their chances of winning are equal.
The first die has 5 red faces and 1 blue face. What are the colours on the second die?

Show answer & extension

Half digits

Source: Maths Jam
Can you use each of the digits 1 to 9 to make a fraction which is equal to a half?

Show answer & extension

Tags: numbers

Pizza

Twelve friends want to share a pizza. One of the friends is very fussy and will not eat the centre of the pizza.
Is it possible to split a (circular) pizza into twelve identical pieces such that there is at least one piece which does not touch the centre?

Show answer & extension

If you enjoyed these puzzles, check out Advent calendar 2019,
puzzles about numbers, or a random puzzle.

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

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

Archive

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