Hi John,
>>
>>First of all, my congratulations to you as MOTD :)
>>
>>Second, I thought today at morning about probability and finally I understood the difference. Let's me explain:
>
>As my college professors explained it, it's the possible number of outcomes over the total number of possibilities. That is why there is always a 50% chance of precipitation; it will either (rain/snow/sleet/hail) or not. So, you have one possibile outcome over two possible occurrences.


May I ask you a very simple question, but you should answer in just one second:
What's the probability, that the product of 2 random numbers in even? Now 3 numbers, now 4...