mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

XYZ

Which digits \(X\), \(Y\) and \(Z\) fill this sum?
$$ \begin{array}{cccc} &X&Z&Y\\ +&X&Y&Z\\ \hline &Y&Z&X \end{array} $$

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

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

Archive

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