Originally Posted by Opalia24

Chance of one of the 6 cards being a SR-girl is 9% with a N-Gacha.
I think placement of SR-girl is random and on big test I get SR-girl 1 in 6.
It dont help to pick a cetain spot all the time or to change spot all the time or to pick the spot when SR was last time.

You can try chasing the SR girl all day long, but you are spinning your wheels. Every time the SR girl shows up, she has a 1 in 6 chance of being in any given spot. If one shows up in the upper left, the next time an SR girl shows up, the chance is STILL 1 in 6 for any given spot.

Just pick a box and stick with it. I always pick bottom middle. I get R cards and SRs every now and again, but there's no box that's more likely than any other. And if you DO try to chase her, Murfy's Law says that she be anywhere BUT where you try.