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Messages are conveyed by arranging 4 whi...

Messages are conveyed by arranging 4 white , 1 blue and 3 red flags on a pole . Flags of the same colour are alike . If a message is transmitted by the order in which the colours are arranged then the total number of messages that can be transmitted if exactly 6 flags are used is

A

45

B

65

C

125

D

185

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The correct Answer is:
D
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