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NCERT Class XI Mathematics - Permutations and Combinations - Solutions

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Question : 8 of 41
Marks: +1, -0
Compute 8!6!×2!\frac{8!}{6! \times 2!}
Solution:  
8!6!×2!\frac{8!}{6! \times 2!} = 8×7×6!6×2\frac{8 \times 7 \times 6!}{6 \times 2} = 4 × 7 = 28
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