A rogue, and a scallywagDiscrete Mathematics Level 1
Bradan is thinking of a positive integer. The integer is either 3 digits with the last two digits equal to 21, or the integer is 2 digits with the first digit equal to 2. How many different integers could Bradan be thinking of?
Details and assumptions
The number \(12=012\) is a 2-digit number, not a 3-digit number.