A bag contains 4 balls. Each ball is a single color, and 3 distinct colors are represented in the bag. What is the probability that the first 3 balls selected without replacement are the same color? Express your answer as a common fraction.
Total number of balls = 4
Number of balls selected = 3
Then total probability = 2/4 * 1/3 = 1/6
where 2/4 represents that out of 4 balls 2 of
Same color one selected and then as the selection
is without replacement so neat balls having
1/3 probability. of selection on 1 ball is already selected
and not kept back in bag.