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A ship's signal is made by hoisting 3 flags, one above the other, chosen from 5 different flags. How many different signals can be made?

Competition practicePermutations & Combinations
  • A10
  • B125
  • C15
  • D60

Step-by-Step Solution

The order of the flags changes the signal: . (10 ignores order; 125 repeats flags.)
Answer: D) 60

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