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Permutations and Combination — Maths STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceMathsPermutations and Combination1 Mark
Question
Compute:
$\frac{8 !}{6 !-4 !}$
✓

Answer

$\frac{8 !}{6 !-4 !}=\frac{8 \times 7 \times 6 \times 5 \times 4 !}{6 \times 5 \times 4 !-4 !}$
$=\frac{8 \times 7 \times 6 \times 5 \times 4 !}{4 !(6 \times 5-1)}$
$=\frac{1680}{29}$
$=57.93$

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