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In How Many Ways Can Five Children Stand in a Queue? - Mathematics

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प्रश्न

In how many ways can five children stand in a queue?

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उत्तर

Required number of ways = Number of arrangements of all the children = 5P5 = 5!
We know:
nPn = n!
∴ 5P5  = 5! = 120  

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Factorial N (N!) Permutations and Combinations
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अध्याय 16: Permutations - Exercise 16.3 [पृष्ठ २८]

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आरडी शर्मा Mathematics [English] Class 11
अध्याय 16 Permutations
Exercise 16.3 | Q 15 | पृष्ठ २८

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