Answer:

Step-by-step explanation:
The limit is:

so, you have an indeterminate result. By using the l'Hôpital's rule you have:

by replacing, and applying repeatedly you obtain:

hence, the limit of the function is -1/14
There are 10 options for each slot, 10 x 10 x 10 x 10 = 10000. 1 / 10000 = 0.0001. the answer is 0.001%