Joke of the Day

Compliments of Lord Mhoram.

Several university students in a Logic & Reasoning class are given the assignment to prove that all odd numbers are prime. Their responses are as follows:

Mathematics major: 3 is prime, 5 is prime, 7 is prime, and the rest by induction.
Physics major: 3 is prime, 5 is prime, 7 is prime, 9 is an experimental error, 11 is prime...
Chemistry major: 3 is prime, 5 is prime, 7 is prime, let's publish!
Engineering major: 3 is prime, 5 is prime, 7 is prime, 9 is a good approximation...
Economics major: 2 is prime, 4 is prime...
English major: 1 is prime, 2 is prime, 3 is prime, 4 is prime...