In how many ways can 7 girls and 3 boys sit on a bench in such a way that every boy sits next to at least one girl. I don't know how to do it
74804
In how many ways can $7$ girls and $3$ boys sit on a bench in such a way that every boy sits next to at least one girl
140806
How do I tackle this combinatorics problem about married couples around a table?
104666
Distributing distinct apples and pears to three people so that each person receives at least one pear
65629
How many squares actually ARE in this picture? Is this a trick question with no right answer?
66524
The Impossibility ( or Possibility) of Solving $N$-Body Problem
123137
Recursion: putting people into groups of 1 or 2
110856
Number of ways to select $K$ people from $N$ people such that at least $r$ people are there in between them
22454
How many combinations can I make?
137347
How to ask multiple similar but different questions?
24184
Probabilty of having exactly one sibling
138601
There are $2n+1$ people. For each $n$ people there is somebody who is friend with each of them. Prove there is a "know-them-all" person.
123711
Cyclic group with exactly 3 subgroups: itself $\{e\}$ and one of order $7$. Isn't this impossible?
70851
In a family with two children, what are the chances, if one of the children is a girl, that both children are girls?
94141
$20$ people are sitting around a (circular) table. How many ways can we choose $3$ people, no two of whom are neighbors?
70793
Person, Persons, People, Peoples
30169
Finding probability of other child also being a boy
92963
How many ways are there to arrange 10 distinct men and 10 distinct women on 7 seats, such that no 2 women are together?