The number of different signals that can be
made by 5 flags from 8 flags of different
colours is
1) 6720 2) 8C
3) 89
4) 58
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2
Answer:
The total number of signals is the number of arrangements of 8 flags by taking 5 flags at a time. Hence, required number of signals
=
8
P
5
=
(8−5)!
8!
=
3!
8!
=
3!
8×7×6×5×4×3!
=6720.
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