does order matter in division of fractions? for example, is 2 3rds divided by 1 5th the same as 1 5th divided by 3 2s

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?