Timothy is re-arranging his marble collection. He has 5 identical blue marbles,
5 identical green marbles and 3
identical black marbles. He can fit exactly five
marbles into a case and must have at least one of each. How many different ways
can he arrange the case in
Answers
Answered by
8
Answer:925
Here the balls are identical. Hence we use combination.
BLUE*GREEN*BLACK
5C2*5C2*3C1+
5C3*5C1*3C1+
5C1*5C3*3C1+
5C2*5C1*3C2+
5C1*5C2*3C2+
5C1*5C1*3C3= 300+150+150+150+150+25= 925
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