Let a = {10, 20, 30, 40, 50, 60} and b = {10, 40, 60}. what is a ∩ b?

{10, 40}
{40, 60}
{10, 40, 60}
{10, 20, 30, 40, 50, 60}

The A ∩ B is  {10, 40 ,60} .

Step-by-step explanation:

As given in the question

A = {10, 20, 30, 40, 50, 60}

B = {10, 40, 60}

The intersection A ∩ B of two sets A and B is represented the set that contains all elements of A that also belong to B .

Thus the A ∩ B becomes

A ∩ B = {10, 40 ,60}

Therefore the A ∩ B is  {10, 40 ,60} .

x=5, y=15

Step-by-step explanation:

x= cost of a chair

y= cost of a table