mscroggs.co.uk
mscroggs.co.uk

subscribe

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 Advent calendar 2019,
puzzles about prime numbers, or a random puzzle.

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020