Question

a) A card is drawn from a packet of numbered cards numbered from 1 to 20. If the
second card is also drawn without replacing the first one, find the probability of
each of the following events,
(i) Both of them are of the multiples of 5.
(ii) The first is of even number and the second prime number.
(iii) None of them are of multiples of 3.
fiv) Show these probabilities in a tree diagram.​

Answer 1

Answer:

1 4/20

2 1/20

3 6/20

last one I don't know