21 December

Today's number is a multiple of three. The average (mean) of all the answers that are multiples of three is a multiple of 193.
Tags: averages, mean


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Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

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


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© Matthew Scroggs 2019