4 dices are thrown at the same time. What is the probability of getting ONLY 2 dices showing the same face?  Choose the correct choice from the following answers:
A) 4 / 9	B) 5 / 9	C) 11 / 18	D) 7 / 9	E) none of the above

Rationale: probability of getting two same faces : 1 and 1 / 6 for other two faces , probabilities : 5 / 6 and 4 / 6 respectively . the dice combinations can be arranged in 4 ! / 2 ! ways total probability = 1 * 1 / 6 * 5 / 6 * 4 / 6 * 4 ! / 2 ! = 5 / 9 answer : b
Answer: B