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 2024

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2025