From a group of 3 balls and 3 bats, 4 are to be randomly selected. What is the probability that equal numbers of balls and bats will be selected? Select
A) 1/5 B) 2/5 C) 4/5 D) 1 E) 3/5
Using the first example, here is the probability of THAT EXACT sequence occurring:   BBbb = (3/6)(2/5)(3/4)(2/3) = 36/360 = 1/10   Each of the other 5 options will yield the exact SAME probability....   eg   BbBb = (3/6)(3/5)(2/4)(2/3) = 36/360 = 1/10   So we have 6 different options that each produce a 1/10 chance of occurring.   6(1/10) = 6/10 = 3/5   Final Answer:   3/5
<result>E</result>
From a group of 3 balls and 3 bats, 4 are to be randomly selected. What is the probability that equal numbers of balls and bats will be selected?