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 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

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

Archive

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