Ex 6.1,6 - Chapter 6 Class 11 Permutations and Combinations

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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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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo