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Sliva [168]
3 years ago
12

A shipping company devises a messaging consisting of 9 flags hung in a line. Howmany different messages are possible if communic

ation is constructed from a set of4 white, 3 red, and 2 blue flags. Note that ordering of the colors matters, but thatflags of the same color are indistinguishable from one another.
Mathematics
1 answer:
Feliz [49]3 years ago
8 0

Answer: 1260

Step-by-step explanation:

The number of permutation of n things in which 'a' things are like , 'b' things are like and so on.. is given by :-

\dfrac{n!}{a!\ b!....}

Given : A shipping company devises a messaging consisting of 9 flags hung in a line.

Then, the number of different possible messages constructed from a set of 4 white, 3 red, and 2 blue flags will be :-

\dfrac{9!}{4! 3!2!}\\\\=\dfrac{9\times8\times7\times6\times5\times4!}{4! 3\times2\times2}\\\\=1260

Hence, the number of different possible messages constructed from a set of 4 white, 3 red, and 2 blue flags= 1260

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