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Question
Compute:
(i)\[\frac{30!}{28!}\]
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Solution
\[ \frac{30!}{28!} = \frac{30 \times 29 \times 28!}{28!} \left[ \because n! = n(n - 1)! \right]\]
\[ = 30 \times 29\]
\[ = 870\]
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