mscroggs.co.uk
mscroggs.co.uk

subscribe

Archive

Show me a random puzzle
 Most recent collections 

Tags

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

Archive

Show me a random puzzle
▼ show ▼

Sunday Afternoon Maths LXVII

 Posted on 2019-05-19 

Coloured weights

You have six weights. Two of them are red, two are blue, two are green. One weight of each colour is heavier than the other; the three heavy weights all weigh the same, and the three lighter weights also weigh the same.
Using a scale twice, can you split the weights into two sets by weight?

Show answer & extension

Not Roman numerals

The letters \(I\), \(V\) and \(X\) each represent a different digit from 1 to 9. If
$$VI\times X=VVV,$$
what are \(I\), \(V\) and \(X\)?

Show answer

If you enjoyed these puzzles, check out Sunday Afternoon Maths LXVII,
puzzles about palindromes, or a random puzzle.
© Matthew Scroggs 2019