Roger has a bag of marbles. There are $6$ red, $4$ blue, $3$ white, and $7$ green marbles in the bag. If he draws one marble, replaces it, and then draws another, find the following probabilities. Write your answer as a fraction and a percent.  

1. P(red, red)

2. P(not white, green)

   Answer (b):

   $\frac{119}{400}=29.75\%$

3. P(blue or white, red)

4. Find the answer for part (a) above if Roger does not replace the marble before selecting the second one.