Question

Stuart draws a card from a deck containing ten cards numbered 1 through 10. He replaces the card and shuffles the deck. If Stuart repeats this

process 150 times, approximately how many times will he draw a single-digit card that has an even number?
15
60
75
90

Make sure to explain thanks! :D​

Answer 1

the answer is 60

Answer 2

60

Explanation:

Of the 10 cards, there are 4 that are single-digit even numbers (2, 4, 6, and 8). So he can expect to draw one of these cards 4/10ths of the time.

If he draws 150 times, the expected number of times he will get a single-digit even number is 4/10 (150) = 60.