A survey of 100 students asked which languages they liked from French, Spanish, and German. 15 students like all three. 60 students like French. 12 like French and Spanish but not German. 28 like Spanish and German. 8 students do not like any of the three languages. All 40 students who like German like at least one other language.
Two of the 100 students are chosen at random. Work out the probability that they both like Spanish.
