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


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


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