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Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Maths > Chapter 7 - Permutation and Combination > 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?

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?

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?