Similar question (This will help you)
Thank you :)
The answer is 6 :D
Yeah. You aren't supposed to post ongoing contest questions, broski2916
To confirm, I think that 19 would be the smallest possible prime.
Check this out:
The answer will be:
This similar question will help you:
[ ] These brackets means "Include".
() These parantheses means "Do not include".
However, this doesn't come in this case. Look at jfan's answer above.
This similar question will help you. Look cloooosely at Chris's answer.
You click the "Images" button, and enter the URL of the image.
--Divide each side by 8--
25/8 : 2
So, the oil spil covers 25/8 square meters after two hours.
1/2 divided by 4
=1/2 times 1/4