16 December

Arrange the digits 1-9 in a 3×3 square so that: the median number in the first row is 6; the median number in the second row is 3; the mean of the numbers in the third row is 4; the mean of the numbers in the second column is 7; the range of the numbers in the third column is 2, The 3-digit number in the first column is today's number.
median 6
median 3
mean 4
today's numbermean 7range 2

Show answer


Show me a random puzzle
 Most recent collections 

Advent calendar 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021