Study the given diagram carefully and answer the question that follows. The numbers in different sections indicate the number of persons who can drive different vehicles.
What is the difference between the number of persons who can drive all the three vehicles and that of persons who can drive any two of these vehicles?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 21.
Thus, the difference between the number of persons who can drive all the three vehicles and that of persons who can drive any two of these vehicles = (7 + 12 + 8) - 6 = 27 - 6 = 21