Let A = { 1 , 4 } and B = { 2 , 3 , 5 }.Find × and find the number of relations from A to B

Given:

The two sets are:

To find:

The and the number of relations from A to B.

Solution:

If A and B are two sets, then

We have,

Then,

If number of elements in set A is m and the number of element in set B is n, then the number of relations from A to B is .

From the given sets, it is clear that,

The number of elements in set A = 2

The number of elements in set B = 3

Now, the number of relations from A to B is:

Therefore, the required relation is and the number of relations from A to B is 64.

30005

yes ok                                            

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: