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Question

How many different signals can be given using any no. of flags from 5 flags of different colours is

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Solution

Dear student

If taken one flag, no. Of signals = 5
If taken 2 = 5c2 x 2!= 10*2 = 20
Taken 3 = 5c3 x 3! = 10*6 = 60
Taken 4 = 5c4 x 4! = 5*24 = 120
Taken 5 = 5c5 x 5! = 1*120 = 120

Total= 5 + 20 + 60 + 120 + 120 = 325

Regards

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