She can choose three books in 54 ways
What is permutation?
Permutation is a technique involving in which a set or number of things can be ordered or arranged. We use permutation to solve and compute answers
We are given that, Josephine has three chemistry books, three history books, and nine statistics books
She has to choose one from each subject
Firstly She has 3 chemistry books
This can be selected in 3 ways
Then She has 3 history books
This can be selected in 3 ways
Ans finally she has 9 statistics books
This can be selected in 9 ways
Hence total ways in which she can select 3 books is 3*3*9= 54 ways
Hence in 54 ways she can choose three books
To learn more about permutation please refer
brainly.com/question/1216161
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