Question

The Number of Surjections Restricted to Derangements

score 125 · Answer 1 · 2018-04-28 13:46:39

125

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The Number of Surjections Restricted to Derangements

Published on 28 Apr 2018 - 13:46

score 84 · Answer 2 · 2018-04-29 09:21:58

84

Views

Number of ways of selecting one or more disjoint two-element subsets from a set with $n$ elements

Published on 29 Apr 2018 - 9:21

score 267 · Answer 3 · 2018-04-29 18:17:25

267

Views

Identical and different object distribution among children

Published on 29 Apr 2018 - 18:17

score 464 · Answer 4 · 2018-04-30 10:01:01

464

Views

Prove that $\sum_{k=0}^{n}{n\choose 3k}\le\frac{1}{3}(2^n+2) \text{such that } n>0$ and $k$ is the largest number for which $3k\le n$

Published on 30 Apr 2018 - 10:01

score 109 · Answer 5 · 2018-04-30 10:20:23

109

Views

In how many different ways can $7$ identical objects be distributed between $3$ ordered boxes?

Published on 30 Apr 2018 - 10:20

score 113 · Answer 6 · 2018-04-30 12:01:43

113

Views

A set of 12 cards contains 7 red and 5 black

Published on 30 Apr 2018 - 12:01

score 68 · Answer 7 · 2018-04-30 22:22:29

68

Views

Summation on multiplication of two numbers that equal to a specified sum

Published on 30 Apr 2018 - 22:22

score 163 · Answer 8 · 2018-05-01 00:50:35

If two of the $13$ members of a computer programming team refuse to work together, how many groups of seven can be chosen to work on a project?

score 134 · Answer 9 · 2018-05-01 09:02:15

134

Views

Writing mathematical expressions for selections and arrangements

Published on 01 May 2018 - 9:02

score 88 · Answer 10 · 2018-05-01 13:35:17

88

Views

Want to Know if There's a Way to Solve This Problem Using Combinations?

Published on 01 May 2018 - 13:35

score 699 · Answer 11 · 2018-05-01 13:41:31

699

Views

How to arrange beads in a necklace so that rules are met | Formula

Published on 01 May 2018 - 13:41

score 42 · Answer 12 · 2018-05-01 14:50:23

42

Views

Count selections with the same numbers

Published on 01 May 2018 - 14:50

score 247 · Answer 13 · 2018-05-01 15:26:48

247

Views

Two different subsets of size four with the same sum

Published on 01 May 2018 - 15:26

score 1.7k · Answer 14 · 2018-05-01 16:46:07

1.7k

Views

How many even number greater than 300 can be formed from these numbers?

Published on 01 May 2018 - 16:46

score 96 · Answer 15 · 2018-05-02 14:34:34

96

Views

Container packing - combinations to place 2 x 1 x 1 cubes inside a 2 x 2 x 12 container

Published on 02 May 2018 - 14:34

List Question

The Number of Surjections Restricted to Derangements

Number of ways of selecting one or more disjoint two-element subsets from a set with $n$ elements

Identical and different object distribution among children

Prove that $\sum_{k=0}^{n}{n\choose 3k}\le\frac{1}{3}(2^n+2) \text{such that } n>0$ and $k$ is the largest number for which $3k\le n$

In how many different ways can $7$ identical objects be distributed between $3$ ordered boxes?

A set of 12 cards contains 7 red and 5 black

Summation on multiplication of two numbers that equal to a specified sum

If two of the $13$ members of a computer programming team refuse to work together, how many groups of seven can be chosen to work on a project?

Writing mathematical expressions for selections and arrangements

Want to Know if There's a Way to Solve This Problem Using Combinations?

How to arrange beads in a necklace so that rules are met | Formula

Count selections with the same numbers

Two different subsets of size four with the same sum

How many even number greater than 300 can be formed from these numbers?

Container packing - combinations to place 2 x 1 x 1 cubes inside a 2 x 2 x 12 container

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