Question

These marbles are placed in a bag and two

of them are randomly drawn.
What is the probability of drawing two
yellow marbles if the first one is placed back
in the bag before the second draw?
Give your answer as a ratio, reduced to
simplest terms.

Answer 1

1/25

Explanation:

The bag has:

• 2 yellow marbles
• 3 red marbles
• 5 blue marbles
• 10 total marbles

The probability of picking a yellow marble is 2/10=1/5.

So, the answer is (1/5)² = 1/25