If you want the intersect of M and N, then:
M∩N = {4,7} (common part in M AND N)
0.2 repeating is 0.2222222222...
so you have to put the repeating digit(s) divided by 9's
Then it will be 2/9 which yields 0.222222222.....
With out deductions the total will be 729.16. but with the deductions the income will be 500.
A quick and easy way to do this particular question is to think all of these numbers are close to 1/2 except 2/31. So, the lowest is 2/31.
H O P E T H I S H E L P S!
