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Permutations — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSPermutations2 Marks
Question
Compute: $\frac{30!}{28!}$
✓

Answer

We have, $\frac{30!}{28!}=\frac{30\times29\times28!}{28!}$$= 30 \times 29$
$= 870$
Hence, $ \frac{30!}{28!}=870$

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