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 2023

Advent calendar 2022

Advent calendar 2021

Advent calendar 2020


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2024