a coin is tossed 3 times . what is the probability of getting exactly 2 heads ?
"the number of possible outcomes is 2 ^ 3 = 8 there are 3 ways to get exactly 2 heads . p ( exactly 2 heads ) = 3 / 8 the answer is c ."
multiply(power(divide(const_1, const_2), 2), multiply(choose(3, 2), divide(const_1, const_2)))