Question

10 cards are numbered from 1 to 10 and placed in a box. one card selected at random and is not replaced. another card is then randomly selected. what is the probability of selecting two prime numbers?

Answer 1

The prime numbers from 1-10 are 2, 3, 5, 7
First pull: P(prime) = 4/10
Second pull: P(prime)= 3/9
(4/10)*(3/9)=
(2/5)*(1/3) = (2/15)

Answer 2

4/10 hope this helps