OK, I have a stout shield - this should give me 40%chance of blocking 30damage. If I have two shields is it 80%? The same thing with basher - is the 15%chance to stun added or somehow multiplied?

hm... not sure if I understand :-] So you think it can be this way:
2stout shields = 0,4 + 0,4 - 0,4*0,4 = 0,64 (64% of -30 damage)
2bashers = 0,15 + 0,15 - 0,15*0,15 = 0,2775 (27,75% chance to stun)
I am not sure if these formulas are right, I have found them somewhere when searching for probability adding...

I would search for it, but the search function mysteriously does not work for my account there! I wrote to admin but he didn't help
Yes it was probably wrong. Here is a corrected version
2bashers: 0,15+(1-0,15)*0,15 = 0,2775 (27,75%)
2stout shields: 0,40+(1-0,40)*0,40 = 0,64 (64%)

OMG the results are the same as before! So I think it must be right...
the second item adds it's value lowered by the percentage of the first one (actually itself)...

So 3536837, it is a little different then you say (+1basher

This post has been edited by LoWang: Oct 29 2006, 07:40 AM

High school of DotA - three stout shields and three bashers!

We made a really big research about this and we found a formula for this situation:
3a-3a^2+a^3
so three stout shields would be:
3*0,4-3*0,4^2+a^3 =
1,2 - 0,48 + 0,064 = 0,784 = 78,4% chance to block 30 damage

three bashers:
3*0,15-3*0,15^2+0,15^3 =
0,45 - 0,1575 + 0,003375 = 0,295875 = 29,6% to stun