a) In Kongowea primary school, there are 180 pupils in class seven. One hundred and ten pupils study French, 88 study German and 65 study china language. Forty pupils study both French and German, 38 study German and German only. Find the number of pupils who study:

i. all three languages

ii. china only

iii. none of the languages

iv. at least one language

v. either one or two of the three languages. (5 marks)