mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2017

7 December

The odd numbers are written in a pyramid.
What is the sum of the numbers in the seventh 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

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

Archive

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