Four numbers from the set 0 to 9, including 0 and 9, are used to create a personal identification number. Once a number is used,
it cannot be reused. How many possible outcomes exist for the situation? How many possible outcomes begin with a 0? What is the theoretical probability of choosing a personal identification number that begins with a 0?
You have to divide the fractions so it 3/4÷1/10 then you can do keep change flip so the new equation is 3/4×10/1 or 3/4×10 then cross simply then get 3/2×5/1 to get 15/2 then use division to get 7 1/2
