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Understanding distribution using Stirling number of the second kind inclusion exclusion approach

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#combinatorics #permutations #combinations #inclusion-exclusion
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Set of Integers, find expectation of twin pairs (defined in description)

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#probability #combinatorics
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How many different ways are there to choose 5 items from 12 distinct items if…

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#combinatorics
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10 coupons are given to 20 shoppers in a store. Each shopper can receive at most one coupon.

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#combinatorics
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How many different ways are there to choose 10 donuts from 20 varieties if…

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#combinatorics
106
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A coin-tossing game with an unexpected expected value?

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#probability #combinatorics
438
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How many different variable names are there in JAVA?

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#combinatorics
1.4k
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Abelian groups of order 96

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#combinatorics #group-theory #abelian-groups
179
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Perms and Combs Question - Dealing with 'Mississippi'

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#combinatorics
404
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How to find generating function that every positive integer can be written as a unique sum of powers of 3

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#combinatorics #generating-functions
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How many different hands of 7 cards…

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#combinatorics
84
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Fill matrix with elements from $\mathbb{Z}/(n)$ such that sums of rows and columns have specific values

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#combinatorics #matrices #modular-arithmetic
84
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Deriving the number of students reading three newspapers based on information regarding readership of each

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#combinatorics #elementary-set-theory
111
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How many options are there for selecting a scoop of ice cream with up to $3$ toppings?

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#combinatorics #discrete-mathematics
63
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Combinatorial count of Min and Max of some functions

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#real-analysis #combinatorics #maxima-minima

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