mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Cycling digits

I have in mind a number which when you remove the units digit and place it at the front, gives the same result as multiplying the original number by 2. Am I telling the truth?

Show answer & extension

Tags: numbers
If you enjoyed this puzzle, check out Sunday Afternoon Maths XV,
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

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

Archive

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