 Hello and welcome to the session. My name is Asha and I am going to help you with the following question that says, Suppose three bugs are selected at random from a lot. Each bulb is tested and classified as defective or non-defective. Write the sample space of this experiment. So let's start with the solution and suppose these three bugs are selected from the lot. A bug when tested can turn up the defective or non-defective. Here these three bugs are tested. So the first possible outcome is all the three bulbs are defective D D D. The second possible outcome is first two bulbs are defective and the third one is non-defective. The third possible outcome is first and third bulb are defective and the second is non-defective. The fourth possible outcome can be first bulb is non-defective. The last two bulbs are defective. The fifth possible outcome is first bulb is defective and the last two are non-defective. Sixth outcome is first and third bulbs are non-defective and the second bulb is defective. Seventh outcome is first two are non-defective. Third one is defective and the last possible outcome when the three bulbs are selected at random from a lot is all the three bulbs are non-defective that is N, N and N. Hence the required sample space for the given experiment have eight sample points. First is D D D. All the three bulbs are defective. Second is D D N. Third is D N D. Fourth is N D D. Third is D N N. N D N. Seventh is N N D. And the last one is N N N. So this completes the session. Bye and take care.