Simple probability question event not occuring.

So I'm sure I have been able to do this in the past but over the years of not using this knowledge it has kind of slipped away.

What I wish to calculate is the probabiliy/percentage of an event not occuring.

So for this example ;

I have a dice with 150 sides, 1 is positive the other 149 are negative.

I roll this dice 1500 times.

How do I calculate the odds of me not hitting positive one single time?

I'm sure this is beginner stuff but I tried searching the web but couldn't find it clearly.

So if someone could enlighten me that would be much appreciated, thanks for reading.

If you have only one, it's a "die".

Independent Events. Does any roll depend on any other roll?

[p(one failure)]^(1500) -- One must fail EVERY TIME.

Headchef said:

What I wish to calculate is the probabiliy/percentage of an event not occuring.

I have a dice with 150 sides, 1 is positive the other 149 are negative. I roll this dice 1500 times. How do I calculate the odds of me not hitting positive one single time?

Click to expand...

With more dice the way it is usually expressed is to talk about getting at least one occurrence of a thing. Then we say to not get any requires not getting any on each and every roll.

chanceToNotGetAny^numberOfRolls
(149/150)^1500