Answer: A. 3/5
Step-by-step explanation:
Assuming that they are colorful blocks,
- There are in total 10 blocks
- There are in total 2 blue blocks
- There are in total 5 even blocks
Blue blocks: 1, 2
Even blocks: 2, 4, 6, 8, 10
The net total of blue and even blocks:
However, as we can see from above, the number [2] is repeated in both cases, thus we shall subtract one of them from the total number.
We analyzed at the beginning where there are 10 blocks in total. Then, utilizing the probability formula below:
Hope this helps!! :)
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