Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Set \(S\) consists of all prime integers less than 10. If two numbers are chosen form set \(S\) at random, what is the probability that the product of these numbers will be greater than the product of the numbers which were not chosen?
I think it should be specified that two 'different' numbers are chosen. if not then 7,7 is also a possibility and then the probability will not be 1/2.