Question

Find the number
of reflexive relations on a set
containing in elements, when n=8​

Answer 1

Answer:

Given, A=a,b,c

Here, the number of elements in set A is 3.

We know that, if set A has n elements, then total number of reflexive relations is 2

n

2

−n

.

Here, n=3

Therefore, the total number of reflexive relations from set A to A

=2

3

2

−3

=2

6

=64