mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

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

Archive

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

Tags

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

Archive

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