Question

Annaa has 5 different science books and 3 different music books. She wishes to put all the books in a row. How many different arrangements are there if all the science books have to be together?

Answer 1

The different arrangements that would be gotten if all science books are put together is =120

Calculation using permutations

The number of science books owned by Annaa= 5

The number of music books owned by Annaa= 3

Total number of books owned by Anna= 8

But the different arrangements that would be gotten if all science books are put together is = 5!

But 5! = 5×4×3×2×1

= 120

Learn more about permutation here:

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