Question

4. A computer randomly prints a three-digit string of numbers. The string consists only of the digits 0, 1, 2, or 3 and satisfies the extra condition that the sum of its digits is 3. As an example, 021 is one such string. a. Write down the sample space s of all such three-digit strings. (HINT: There should be 10 total outcomes including 021. Make sure you found all of them.)