ArchiveShow me a random puzzle
Most recent collections
Sunday Afternoon Maths LXVIIColoured weights
Not Roman numerals
Advent calendar 2018
Sunday Afternoon Maths LXVICryptic crossnumber #2
Sunday Afternoon Maths LXVCryptic crossnumber #1
Square and cube endings
List of all puzzles
Tagsmultiplication logic squares volume balancing grids money triangle numbers cryptic clues dodecagons cube numbers probability circles mean sport chess partitions lines hexagons 2d shapes speed quadratics polygons christmas 3d shapes square roots square numbers perfect numbers cryptic crossnumbers means multiples rectangles dice advent crossnumbers factors scales time factorials calculus folding tube maps routes integration sums digits shapes parabolas coordinates odd numbers prime numbers cards geometry spheres colouring menace dates sum to infinity complex numbers star numbers number sequences graphs triangles symmetry integers trigonometry coins chalkdust crossnumber planes books algebra fractions chocolate crosswords functions clocks differentiation indices shape ellipses perimeter surds regular shapes angles numbers bases irreducible numbers percentages ave wordplay arrows games unit fractions area people maths remainders proportion pascal's triangle taxicab geometry probabilty palindromes averages addition division doubling rugby floors
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?