Question

There is a stack of

10
cards, each given a different number from
1
to
10
. Suppose we select a card randomly from the stack, replace it, and then randomly select another card. What is the probability that the first card is an even number and the second card is less than
5
?
Write your answer as a fraction in simplest form.

Answer 1

There is a 50% chance that the card will be even
2,4,6,8,10 as opposed to 1,3,5,7,9.
5/10 or 1/2

There is a 40% chance that the card will less than 5
1,2,3,4 as opposed to 5,6,7,8,9,10.
4/10 or 2/5