The number of people needed to form a congregation can vary depending on religious beliefs and community practices. In many traditions, a congregation can be as small as two or three individuals gathered for worship, while others may require a larger group. Ultimately, it is the shared intent to worship and come together in faith that defines a congregation, rather than a specific numerical threshold.
Lots of people
20 people
4 people
One.
2
6
The exact number of people it takes to make a medieval catapult. :-)
1000
13,765 people
100
200,000
To make a quartet, you have to have four people.