Wednesday, April 22, 2009

April 22, 2009

Let n be a positive integer such that 1/2 + 1/3 + 1/7 + 1/n is an integer. Which of the following statements is not true:

(A) 2 divides n
(B) 3 divides n
(C) 6 divides n
(D) 7 divides n
(E) n > 84

Interactive version of problem and solution.