Answer:
6.7%
Step-by-step explanation:
Out of 10 total blocks, 3 blocks are yellow. Ramona picks a block and doesn't put it back. Then Beezus picks a block. What is the probability that both girls pick yellow?
They are two independent events, therefore, the final probability is the multiplication of both events.
First event, Ramona.
There are 3 yellow blocks and 10 in total. Therefore the probability is:
3/10
Second event, Beezus
Ramona took out a yellow block, so there are 2 yellows and 9 in total, therefore:
2/9
The final probability is:
P = 3/10 * 2/9
P = 0.067
Which means that the probability is 6.7%
