Question

A day of the week is chosen at random. What is the probability that it is a Wednesday or Saturday?A.2/7B.1/7C.2/14D. 2

Answer 1

`A)(2)/(7)`

Step-by-step explanation

There are 7 days in a week.

The probability that a chosen day of the week is Wednesday or Saturday is the sum of the probability that the day is a Wednesday and the probability that the day is a Saturday.

Since there is only one Wednesday in a week, the probability that the day is a Wednesday is:

`P(W)=(1)/(7)`

The same rule applies for Saturday:

`P(S)=(1)/(7)`

Therefore, the probability that the day is a Wednesday or a Saturday is:

`\begin{gathered} P(W-or-S)=(1)/(7)+(1)/(7) \\ P(W-or-S)=(2)/(7) \end{gathered}`