statistics
posted by monique .
use the normal distribution to approximate the desired probability.
find the probability that in 200 tosses we will obtain at least 40 fives.

Probability = N!/(r![Nr]!) * p^r * q^(nr)
Probability = 200!/(40![20040]!) * (1/6)^40 * (5/6)^(20040)
Probability = 0.032865