Homework SourseIn order to conduct an experiment four subjects are randomly
In order to conduct an experiment, four subjects are randomly selected from a group of 20 subjects. How many different groups of four subjects are possible
In order to conduct an experiment, four subjects are randomly selected from a group of 20 subjects. How many different groups of four subjects are possible
Solution
4 are to be selected form 20
Normally in groups order does not matter.
Hence we can use combinations
no of different groups = 20C4
= 4845
