Probability help please!?

Question

The law of large numbers states the following (go to link below to see):

http://i236.photobucket.com/albums/ff270/corinz1/LLL.jpg

Chebyshev's inequality states that:
P(X - E(X)| ≥ a) ≤ 1/a^2 * var(X)

Using Chebyshev's inequality, prove the law of large numbers.

Answer 1

http://en.wikipedia.org/wiki/Law_of_large_numbers/Proof