200 words with the answer.

An urn contains 7 blue and 3 yellow chips. If the drawing of chips is done with replacement, determine the probability of: Drawing three yellow chips.

Drawing a blue chip on the first draw and a yellow chip on the second draw. Drawing a blue chip on the second draw given that a yellow chip was drawn on the first draw.

Drawing a yellow chip on the second draw given that a blue chip was drawn on the first draw.

Drawing a yellow chip on the second draw given that a yellow chip was drawn on the first draw.

Your response should be at least 200 words in length.