Question

In a group of 84 individuals surveyed, 36 can speak French, 25 can speak Korean, and 55 can speak Filipino. Seventeen people can speak both French and Korean, 18 people can speak both Korean and Filipino, and 11 people can speak French and Filipino. If ten people can speak the three languages, how many of the people surveyed cannot speak any of these three?

Answer 1

Answer:

49 I think................