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9 years, 1 month ago
How many different signals can be made by hoisting 5 different colored flags one above the other,when any number of them may be hoisted a time? (a) 2^5 (b)5P5 (c)325 (d) None
9 years, 1 month ago
There are 5 flags.
Total Number of signals made using 5 different colored flags = 5p1+5p2+5p3+5p4+5p5 = 325
7 years, 3 months ago
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