Which events are independent? check all that apply.

a) roll a number cube, and then roll the same number cube again.
b) flip a coin, and then flip the coin a second time.
c) remove a card from a deck, and then remove a second card.
d) draw a card from a deck, replace it, and then draw a second card.
e) take a marble out of a bag, and then take a second marble out of the bag.