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Combinatorics method by splitting

score 351 · Answer 1 · 2026-03-30 19:16:47

351

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Combinatorics method by splitting

Published on 30 Mar 2026 - 19:16

score 97 · Answer 2 · 2020-10-23 17:52:04

97

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Calculate:How many students?

Published on 23 Oct 2020 - 17:52

score 91 · Answer 3 · 2020-10-27 09:56:28

91

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Combinatorics - inclusion exclusion principle

Published on 27 Oct 2020 - 9:56

score 366 · Answer 4 · 2020-10-29 20:31:59

366

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Sets and the principle of inclusion and exclusion

Published on 29 Oct 2020 - 20:31

score 457 · Answer 5 · 2020-11-01 18:46:03

457

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Inclusion-Exclusion Counting

Published on 01 Nov 2020 - 18:46

score 97 · Answer 6 · 2020-11-04 09:47:34

97

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How to prove : $|A_{1} \Delta \cdots \Delta A_{n}| = \sum_{i} |A_{i}| - 2 \sum_{i<j}|A_{i} \cap A_{j}| + \cdots$?

Published on 04 Nov 2020 - 9:47

score 336 · Answer 7 · 2020-11-06 03:54:02

336

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There are 'n' candies and 't' boxes. Find the number of ways to place the candies in the boxes for each of the conditions (given in the problem).

Published on 06 Nov 2020 - 3:54

score 59 · Answer 8 · 2020-11-07 19:49:44

59

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Summation indices in a proof of Incluson-Exclusion Principle

Published on 07 Nov 2020 - 19:49

score 63 · Answer 9 · 2020-11-09 17:46:00

63

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Deriving a general formula for the number of onto functions from the given theorem

Published on 09 Nov 2020 - 17:46

score 45 · Answer 10 · 2020-11-10 18:38:38

45

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Permutations with fixed point conditions

Published on 10 Nov 2020 - 18:38

score 40 · Answer 11 · 2020-11-11 17:34:31

40

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Find number of $20$-combinations od multiset $M=\{d^2,a^2,b^\infty,c^\infty\}$.

Published on 11 Nov 2020 - 17:34

score 46 · Answer 12 · 2020-11-13 18:50:46

46

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Distribution of $n$ items among $k$ compartments (tennis game)

Published on 13 Nov 2020 - 18:50

score 308 · Answer 13 · 2026-02-23 22:24:54

308

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$n$ people have participated in a party. each of whom brought an umbrella and a coat. At the end of the party...

Published on 23 Feb 2026 - 22:24

score 43 · Answer 14 · 2020-11-14 13:51:35

43

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Finding the number of 7 letter words from A, B, C, D, E, F, G in which A, B, C each occurs at least once.

Published on 14 Nov 2020 - 13:51

score 2.4k · Answer 15 · 2020-11-15 12:30:31

2.4k

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In how many ways can I distribute 5 distinguishable balls into 4 distinguishable boxes such that no box is left empty.

Published on 15 Nov 2020 - 12:30

List Question

Combinatorics method by splitting

Calculate:How many students?

Combinatorics - inclusion exclusion principle

Sets and the principle of inclusion and exclusion

Inclusion-Exclusion Counting

How to prove : $|A_{1} \Delta \cdots \Delta A_{n}| = \sum_{i} |A_{i}| - 2 \sum_{i<j}|A_{i} \cap A_{j}| + \cdots$?

There are 'n' candies and 't' boxes. Find the number of ways to place the candies in the boxes for each of the conditions (given in the problem).

Summation indices in a proof of Incluson-Exclusion Principle

Deriving a general formula for the number of onto functions from the given theorem

Permutations with fixed point conditions

Find number of $20$-combinations od multiset $M=\{d^2,a^2,b^\infty,c^\infty\}$.

Distribution of $n$ items among $k$ compartments (tennis game)

$n$ people have participated in a party. each of whom brought an umbrella and a coat. At the end of the party...

Finding the number of 7 letter words from A, B, C, D, E, F, G in which A, B, C each occurs at least once.

In how many ways can I distribute 5 distinguishable balls into 4 distinguishable boxes such that no box is left empty.

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