Suppose that a subset of 4 balls will be randomly selected from a collection of 4 amber balls, 4 blue balls,4 copper balls, and 4 green balls (so 16 balls in all). what is the probability that exactly two of the colorswill be present (and exactly two of the colors will be absent) in the set of randomly selected balls

16% can be fonud

                                                                    Im not sure

b

step-by-step explanation:

the word superfluous means unnecessary

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point