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