I have always thought of the cocept of probability as a bit wierd and thought I could post up a few questions to do with the basic concepts of probability and see how they can be mathematically proved. Here goes:(adsbygoogle = window.adsbygoogle || []).push({});

1) The method of measuring probabability we use, with 0< or = P < or = 1; is this just the method mathemeticians have chose to use? ie - could we say that 0 and 1 are defined as such, but we could have come up with a different kind of probability measuring system.

2) Is there a way to mathematically prove the formula P(x) = Num. ways x can occur/ all possible outcomes?

3) Why do these probabilities will relate to real life? ie - if we conduct and experiment with a dice, once we have completed a large number of throws we would expect 1/6 to be 1s, 1/6 to be 2s, etc? Is there a way to prove why this would be the case mathematically?

4) Is there a way to mathematically prove the formula P(x or y) = P(x) + P(y)?

That will do for now. ;-) I know in may at first glance seem basic, but when we learn prob you are always just told that the equation works and that this is what therefore happens in real life - it is never prooved or explain. Please could someone do that for me.

Thanks in advance. :-)

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# Concept of probability

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