Question 62514
You have to draw the Venn diagram and work from the 
intersection of the three circles outward
E and F and G = 1
E and F = 16
E and G =10
G and F = 8
E only =75
F only =57
G only = 3
Total with a language = 230
No language = 70
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a) P(3 languages)=1/300
b) P(At least 2 languages)=(32+1)/300=33/300
c) P(1 language only)=(75+57+33)/300
d) P(None of the languages)=70/300
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Cheers,
Stan H.