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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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sum to infinity
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angles
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scales
elections
sums
neighbours
dodecagons
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pascal's triangle
prime factors
taxicab geometry
xor
crosswords
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shapes
consecutive numbers
chocolate
speed
logic
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complex numbers
axes
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means
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routes
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cryptic clues
sequences
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