mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2017

8 December

The odd numbers are written in a pyramid.
What is the mean of the numbers in the 23rd row?
Tags: numbers

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021

Advent calendar 2020


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2024