In an ISSB intelligence batch of 100 candidates, 60 cleared the verbal reasoning test, 45 cleared the non-verbal test, and 20 cleared both. How many cleared at least one of the two tests?
Q1. In an ISSB intelligence batch of 100 candidates, 60 cleared the verbal reasoning test, 45 cleared the non-verbal test, and 20 cleared both. How many cleared at least one of the two tests?
Answer: 85
Explanation: Use inclusion and exclusion: 60 plus 45 minus 20 equals 85. That count is the number who passed at least one test.