Answer:
2.49
Step-by-step explanation:
Given X= 58
N = 175.
P = 25% = 0.25.

Now plugging the values we get

=2.49
It is A.
You know this because it is always n-1. (:
Answer:
Not possible
Step-by-step explanation:
By definition, all whole numbers are non-negative.
There are 720 ways.
That's because there are 10 ways for someone to be first, 9 ways for someone to be second after him, and 8 for someone to be third after them, so 10 x 9 x 8 = 720.
8745, 8475, 7485, 7845, 4857, 4785, 8547, 8457, 5487, 5847, 4597, 4857
7548, 7458, 5478, 5784, 4578, 4758, 8758, 8578, 5784, 5874, 7584, 7854