Respuesta :

The number of ways that 4 books can be arranged on a shelf are= 24. That is option 2.

Calculation using permutation

To calculate the number of ways 4 books can be arranged is the find the permutation.

That is ,

4! = 4×3×2×1

4! = 24

Therefore, the number of ways that 4 books can be arranged on a shelf are= 24

Learn more about permutation here:

https://brainly.com/question/1216161

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