Answer:
There would be 1/25 chance (4%).
Explanation:
So there's 4 orange marbles and there's 20 total marbles since:
8 Red + 5 Blue + 4 Orange + 3 Green
With this, the chance of drawing an orange marble is 4/20, or 1/5. Because the marble is replaced back after being picked, the same chance would occur for the second picking.
To combine these chances, multiply them together for the answer.
1/5 * 1/5 = 1/25 (4%)