Is it absolutely pointless to give both parents Power items?
Sort of, yes. If both parents hold a Power item, then it guarantees one parent will pass down that IV. However the other parent is guaranteed not to pass down that IV via the power item (it might possibly pass it down anyway), now that I think about it. If both parents are holding the same power item, then it is definitely a waste.
That's right, is there a post with the info about abilities? :s (for RNGing 5th Gen)
Check the RNG guide.
"1:6.25 chance of passing down the two remaining specific IVs that you want to pass down"
Isn't it a 2:11=1:5.5?
(2 IVs you want, 11 possible IVs left after the power band being subtracted.)
And is the 1:2.5 ability because it's a dream world ability?
I need to double check my math on this one, but my original figures show it's a 4:25 chance (which simplifies to 1:6.25) to pass down two remaining specific IVs that you want, as long as both parents have the same IV that you want to pass down.
The way I figure is that there's 10 IVs to pass down, not 11. If the game decides to pass down the HP IV from the Male parent, it's not subsequently going to try to pass down the HP IV from the Female parent at the same time, it's going to pick one of the remaining 5 IVs.
Subsequently if the second IV to pass down is Attack from the male parent, the third IV will not be Attack from the female parent, it will pick one of the remaining four IVs from both parents.
First IV there's 12 total possibilities
Second IV there's 10 remaining possibilities (because two possibilities have been eliminated)
Third IV there's 8 remaining possibilities (because four possibilities have been eliminated)
And of course if both parents have the same exact IVs, then the possibilities are halved.
That's how I figure it anyway.
And yes, 1:2.5 is 4:10, which is the probability of passing down a Dream World ability from the female parent.
I got a couple of questions:
-Is it possible to still do te Masuda Methode when one of the pokemon holds a everstorn?
-And is it ok if I turn the DS off or does it have to on all the time/on standby at most?
Everstone does not work when using parents from different regions, so no. And I don't understand your second question.