Question

You pick a card at random. Without putting the first card back, you pick a second card at random.

What is the probability of picking a 5 and then picking an even number?

Answer 1

3/5 because since you took out an odd number, there is now 5 cards in total, and there are 3 even numbers.

Answer 2

• 1/10 or 10%

Explanation:

Probability = favorable outcome / total number of outcomes

• p(5) = 1/6

5 numbers left and 3 of them are even.

• p(even) = 3/5

So combined probability is:

• p(5 and even) = 1/6*3/5 = 1/10