Jeremy has two bags of beads.
Bag 1 contains 7 blue beads and 3 yellow beads
Bag 2 contains 11 blue beads and 4 yellow beads
Jeremy rolls an fair six-sided dice.
If he rolls a number less than three, he takes a marble from bag 1.
If he does not roll a number less than three, he takes a marble from bag 2.
Work out the probability that Jeremy chooses a yellow marble
can someone explain step by step
