How many numbers are there between 100 and 300 which either begin with or end with 2?
A
110
B
111
C
112
D
None of the above
Correct Answer: Option A
Explanation
This question asks for the number of integers from 101 to 299 that either start with 2 or end with 2. The phrase 'either... or' is a classic signal for a set theory problem, which we've seen in the 2014 and 2015 papers, where yo