mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Ten digit number

Can you create a 10-digit number, where the first digit is how many zeros in the number, the second digit is how many 1s in the number etc. until the tenth digit which is how many 9s in the number?

Show answer & extension

Tags: numbers
If you enjoyed this puzzle, check out Sunday Afternoon Maths XXIII,
puzzles about numbers, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026