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Ex 7.1, 6 - Given 5 flags of different colours, how many signals - Ex 7.1

  1. Class 11
  2. Important Question for exams Class 11
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Ex7.1, 6 Given 5 flags of different colours, how many different signals can be generated if each signal requires the use of 2 flags, one below the other? A signal can have only 2 flags The required number of signals = 5 × 4 = 20

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