The members of a club were asked whether they speak Cantonese, Mandarin, and Japanese. 100 said that they spoke Cantonese, 150 said that they spoke Mandarin and 200 said that they spoke Japanese. 120 said that they spoke exactly 2 of the 3 languages. How many members does the club have?
1. there are twice as many members who speak none of the languages as there are who speak all 3 languages.
2. half of the members who speak Japanese and Cantonese also speak Mandarin.
I don't have the answer...in my opinion that's E....does smbd thinks differently?
Total = C + M + J - (2 of 3) - 2(all 3) + Niether
Total = 330 - 2(all 3) + Niether
If x = all 3, then 2x = Niether
Total = 330 - 2x + 2x = 330. Sufficient
Tells us that all 3 = 150 but doesn't say anything about niether. Insuff.