UPSC Civil Services 2013 Prelims General Studies Paper II

Out of 120, there are 70 males.
∴ 120 – 70 = 50 females
For a maximum, all 70 male shall have driver’s license.
For a minimum, if all 50 females posses driver’s license,
then the remaining 30 licenses, shall be possessed by males.
So minimum male driver’s licenses = 30.
Min. to max. = 30 to 70 = 3 to 7