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Last updated at Sept. 24, 2018 by Teachoo
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Ex 7.2, 3 - Chapter 7 Class 11 Permutations and Combinations - NCERT Compute 8! / 6! × 2! 8! / 6! × 2! = 8 × 7 × 6! / 6! × (2 × 1) = 8 × 7/ 2 = 4 × 7 = 28
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