hard prep- venn diagram

[syflysun]

40 students study French. 30 study spanish, 20 go for chinese, so how many students study exact 2 languages?

1)5 people study 3 languages
2)52 students study at least one of the three languages

[xcusemeplz2009]

is it C

I am getting 18 as the ans with using bth

[palvarez]

is it C

I am getting 18 as the ans with using bth

Well, it is 28 using both.

95-52 - 5*3 = 28