Question 1193547
<br>
The 24C12 answer from the other tutor is only the number of ways of choosing 12 of the 24 books.<br>
Arranging them on a shelf means order is important, so the answer to the question is 24P12.<br>
ANSWER: 24P12 = (24!)/(12!) = 1,295,295,050,649,600<br>