Advent calendar 2016

19 December

The sum of all the numbers in the eighth row of Pascal's triangle.
Clarification: I am starting the counting of rows from 1, not 0. So (1) is the 1st row, (1 1) is the 2nd row, (1 2 1) is the 3rd row, etc.


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


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


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