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Advent calendar 2023
17 December
All 2023 advent puzzles
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If you expand \((a+b+c)^2\), you get \(a^2+b^2+c^2+2ab+2ac+2bc\). This has 6 terms.
How many terms does the expansion of \((a+b+c+d+e+f)^5\) have?
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\((a+b+c+d+e+f)^5\) has
252
terms.
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probabilty
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ave
angles
consecutive integers
square roots
complex numbers
sequences
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cryptic crossnumbers
calculus
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chalkdust crossnumber
shapes
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integers
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odd numbers
pentagons
numbers
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prime numbers
logic
crosswords
elections
decahedra
dates
median
graphs
quadratics
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taxicab geometry
sets
percentages
triangles
perimeter
colouring
people maths
probability
gerrymandering
proportion
cryptic clues
algebra
routes
dominos
factors
pascal's triangle
averages
wordplay
albgebra
geometry
floors
range
coins
speed
christmas
area
tangents
sum to infinity
scales
addition
bases
sport
determinants
polygons
games
functions
circles
even numbers
balancing
palindromes
division
cards
triangle numbers
unit fractions
time
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polynomials
fractions
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sums
advent
tiling
integration
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chess
tournaments
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crossnumbers
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mean
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