Answer:
For anything you have to ask question, right? How can someone understand if you just show the figure
First you have all ten books, but then every time after, you loose one because you can't put the same book in the group twice.
10 * 9 * 8 * 7 = 5040 groups
You would of taken 28 dollars away after 7 days because if your taking away 4$ each day you just have to figure out 4 times what equals 28 witch is 7
So the answer is 7 days
Answer:I think 0.4
Step-by-step explanation: Hope this helps
