SOLUTION: List all elements of each set The set of all 3-digit numbers made only using digits 2 and 0 (again, each digit can be used more than once.)

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Question 1140409: List all elements of each set
The set of all 3-digit numbers made only using digits 2 and 0 (again, each digit can be used more than once.)

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

The third or the hundredths place can be filled by 1 digit (only number 2) because placing zero at the hundredths place would make the number a two digit number.
So, 3rd place = 1 digit can be filled
2nd place = 2 digits(0 and+2) (Since the numbers can be repeated)
1st place = 2+ digits(0 and+2)
Total Cases = 1+%2A+2%2A+2+=+4 , 3-digit numbers can be formed using 2 and 0 by using them more than once.
these are:
222
220
202
200