When a set of objects are chosen from a larger set in which the order of the object doesn't matter, we call this combination. Otherwise if the order of selection would matter this would be called a permutation.
Probability is the likelihood of selecting a particular specified object in from a specified group of objects.
Therefore our answer is B.
Answer: a)
, b)
c) $5761.36.
Step-by-step explanation:
Since we have given that
Unit price is expressed as

Let x be the number of units of a thousands.
So, Revenue function is given by

.(b) Find the marginal revenue function R'..
Marginal revenue function becomes,

(c) Compute R'(2).

Hence, a)
, b)
c) $5761.36.