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Puzzles

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

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