Admission test for the degree course in medicine and surgery 2012-2013

Test ministeriali 2012-2013 in lingua inglese per l’accesso alla facoltà di Medicina e Chirurgia 2012-2013

Domanda 17 di 80

In a street, a survey showed that out of a hundred households 60 had a cat, 40 had a dog, and 20 had neither a cat nor a dog. How many households had a cat but no dog?