Answer:
The probability that exactly one switch is good is

Step-by-step explanation:
The probability that a switch is defective is:

The probability that a switch is not defective is

Therefore, if two switches are selected, the probability that exactly 1 is good is:



Answer:
I don't know soorry. lalalala
Hi I’m doing this for points
I think is C that what i think:;;:::::);:;:)