9! / (4!3!2!) = 1260.
Answer: 1260
11TH•Mathematics•Permutations And Combinations•Question 4
Overview
Abdullah has a collection of 9 marbles consisting of 4 identical red marbles, 3 identical blue marbles and 2 identical green marbles. If he wants to arrange all of them in a straight row, how many distinct arrangements are possible?
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