Number Puzzle #8
Posted in Puzzles on February 24th, 2009 16 Comments »
The four numbers A, B, A+B and A-B are all prime. The sum of these four numbers is
A) EvenB) Divisible by 3C) Divisible by 5D) Divisible by 7E) Prime
Source: 2002 AMC 10/12B #15