Question

Jessica has 3 cards in a bag, each marked with a letter. The letters are X, Y, and Z. Without

looking, she reaches into the bag, pulls out a card, and then puts the card back in the bag. If
Jessica does this 3 times, what is the probability she pulls out the X card first, then the Y card,
and then the Z card?

Answer 1

1/27

Explanation:

Answer 2

1/27

Explanation:

The chance of getting X is ⅓. The chance of getting X then Y is ⅓², or ⅑. Finally, the chance of getting X, then Y, then Z is ⅓³, or 1/27