mscroggs.co.uk
mscroggs.co.uk
blog     puzzles     academic     talks     contact     subscribe

subscribe

Puzzles

Ten digit number

Source: Richard Wiseman's Blog
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 2023

Advent calendar 2022

Advent calendar 2021

Advent calendar 2020
List of all puzzles

Tags

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

Archive

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