If p(a)=2/3, p(b)= 4/5 and p(a u b) = 3/5, what is p(a u b)? a.) 14/15 b.) 13/15 c.) 8/15 d.) 11/15

From basic probability we know that if A and B are any two events in the sample space, S, then:

......(Equation 1)

In the question we have been given all the data that is required. Thus, we have: P(A)=2/3, P(B)= 4/5 and P(A U B) = 3/5.

Substituting these values in (Equation 1) we get:

This matches Option B. Therefore, Option B is the correct answer.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value