2) Use a Venn diagram (and not the Inclusion-Exclusion Principle) to answer the following question:
A television poll of 191 persons found that 65 watched "Found", 76 watched "Big Bang Premise", 63 watched "Dancing With Famous People", 36 watched both "Found" and "Big Bang Premise", 20 watched both "Found" and "Dancing With Famous People", 18 watched both "Big Bang Premise" and "Dancing With Famous People", and 51 watched none of these shows. How many persons watched all three shows?