just recall the rule that
total = one + other - both.
So, counting just the ones taking something, you have
20+32-6 = 46
So, the other 4 took nothing.
In a survey of a TriDelt chapter with 50 members, 20 were taking mathematics, 32 were taking English, and 6 were taking both. How many were not taking either of these subjects?
1 answer