Question 1028796
1) P(second ball is red) =P(second ball is red/first is Red)×P(first is red) + P(second ball is red/first is green)×P(first is green) = 2/4×2/4 +7/9×2/4 = 23/36.

2) P(first is red/second ball is red)= P(second ball is red/first is red)×P(first is red)/P(second ball is red) =(7/9)×(2/4)/(23/36) = 14/23.