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प्रश्न
In how many different ways can 8 friends sit around a table?
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उत्तर
We know that ‘n’ persons can sit around a table in (n − 1)! ways
∴ 8 friends can sit around a table in 7! ways
= 7 × 6 × 5 × 4 × 3 × 2 × 1
= 5040 ways
∴ 8 friends can sit around a table in 5040 ways.
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