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How many different ways can 3 red, 2yellow and 2 blue bulbs be arranged in a string of Christmas tree lights with 9 sockets?​

Sagot :

Answer:

We have "9 sockets choose 3" for the 3 red lights. That's (9C3) ways.

Answer:

There are 15,120 ways to arrange 3 red, 2 yellow, and 2 blue builds in a string of Christmas tree lights with 9 sockets.

Solution:

P = 9! / 3! 2! 2!

P = 987654321 / 3212121

P = 987654321 / 64 ( eliminate 6 and 4)

P = 9875321

P = 15,120

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