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Advent calendar 2019
15 December
All 2019 advent puzzles
~
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There are 5 ways to make 30 by multiplying positive integers (including the trivial way):
30
2×15
3×10
5×6
2×3×5
Today's number is the number of ways of making 30030 by multiplying.
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30030 is 2×3×5×7×11×13, so the answer is
the number of ways of sharing six elements into unlabelled boxes (A000110).
The answer is
203
.
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cryptic clues
digits
pascal's triangle
factorials
ave
sport
cube numbers
probabilty
tangents
digital clocks
expansions
area
floors
dice
doubling
range
geometry
means
time
prime factors
integration
indices
gerrymandering
odd numbers
square numbers
rectangles
quadratics
elections
integers
chalkdust crossnumber
symmetry
tournaments
triangles
dodecagons
lists
decahedra
palindromes
volume
division
games
sum to infinity
coins
binary
functions
pentagons
even numbers
logic
regular shapes
complex numbers
chess
averages
hexagons
people maths
the only crossnumber
consecutive numbers
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folding tube maps
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