Advent calendar 2016

14 December

In July, I posted the Combining Multiples puzzle.
Today's number is the largest number that cannot be written in the form \(27a+17b\), where \(a\) and \(b\) are positive integers (or 0).


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


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© Matthew Scroggs 2019