3 and then an even = (1/8) (4/8) = 4/64 = 1/16
Intersection of L and T are all the elements common to both T and L
Note...there are no common elements....so {empty set }
Third one...we have 13 cards
2 and 3 without replacement = (2/13) * (1/12) = 2/156 = 1/78
2 and 5 without replacement = (2/13) (2/12) = 4/156 = 1/39
3 and 2 with replacement = (1/13) (2/13) = 2/ 169
5 and 2 with replacement = (2/13) (2/13) = 4/169