Answer: Option 2.
Step-by-step explanation:
a fraction is a way of showing division. b divided by 8 can also be shown as
b
_
8
Permutation of 50 is 50! or 50*49*48*47*46.... and so on. I doubt they actually want you to find out what 50*49*48... is, so I'd just put 50!
Answer: 35 aisles
Step-by-step explanation:
There are 50 aisles.
70% of them are empty.
Total empty therefore is:
= 70% * 50
= 35 aisles
You are multiplying by 3 each time. This sequence is geometric.
9 = 3*3 = 3^2
27 = 3*9 = 3*3*3 = 3^3
81 = 3*27 = 3*3*3*3 = 3^4
and so on.
The general rule is 3^x which is choice D
