An urn contains three red marbles and four blue marbles. One marble is selected at random, its color is noted, and it is returned to the urn. Another marble is then selected. What is the probability...

Extracted text: An urn contains three red marbles and four blue marbles. One marble is selected at random, its color is noted, and it is returned to the urn. Another marble is then selected. What is the probability the second marble drawn is red? to 03 2/7 3/7


Extracted text: The probability of drawing a red marble from a sack of marbles is . Which set of marbles could the sack contain? o 2 red marbles and 5 green marbles 04 red marbles and 6 green marbles 0 6 red marbles and 15 green marbles o2 red marbles, 1 blue marble, and 4 white marbles