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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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ave
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even numbers
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pentagons
matrices
fractions
dominos
planes
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algebra
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axes
squares
perfect numbers
pascal's triangle
chocolate
cards
circles
square numbers
games
cryptic crossnumbers
quadratics
tiling
lists
differentiation
balancing
digital clocks
triangle numbers
consecutive numbers
division
speed
means
multiplaction squares
clocks
the only crossnumber
trigonometry
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lines
medians
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indices
coins
multiples
xor
complex numbers
books
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folding tube maps
products
ellipses
spheres
factors
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averages
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