## 20. Lying Journalists

Three journalists observed a person during breakfast and made the following notes. Ju l y. First, he drank whiskey, then he ate duck with oranges and dessert. Finally, he drank coffee.

Ja c k. He did not drink an aperitif. He ate a pie and a pear "Helen of Troy."

D j i m. First, he drank whiskey, then he ate a pie and strawberry sherbet. He finished his breakfast with a cup of coffee.

(Attention. Everything written by one of the journalists is false, another made only one false entry, and the third never lies.)

Try to determine, based on these conflicting reports, what dessert the person in question chose.
20. Jules and Jim each made four statements. Jacques made three statements. There is no overlap in the information provided by Jules and Jacques. Jules and Jim have three statements in common, while Jacques and Jim have one in common. It is clear from this that Jacques is the one who constantly lies, Jules speaks only the truth, and Jim lied once, as one of his statements matched Jacques', specifically the one about the pie. Therefore, his statement about the dessert is correct. The person observed by the journalists chose strawberry sherbet for dessert.