In survey of 100 students in the instate of language studies at oxford university the number of students studying various language in the last four years were found to be: Italian 28, german 30, French 42, Italian and german 8, german and French 5, all the three language 3 (A) Venn diagram

(B) how many students were studied all languages
(C) how many students studied only Italy and germany
(D) how many students studied French only

4 answers

If x studied Italian and French, then
(28+20+42) - (8+5+x) + 3 = 100 - (# not studying any)

Answer

Thanks

Tinaku