Question

You pick a card at random.3 415What is P(prime)?Write your answer as a fraction or whole number.

Answer 1

Probability

We have that 2 out of 3 cards are prime numbers:

3 and 5 are prime

4 is not prime

P(prime) is the probability that you pick a random card that is prime.

It is given by the number of cards that are prime divided by the total number of cards:

`P(\text{prime)}=(2)/(3)`

Answer: 2/3