Responses
It's not something like luck, I guess.
I believe she knew her chances were not that high, so she tried to make Yumemi doubt her chance of winning. It's simply just bluffing. And plot convienience, if you ask me :D
Yah, it's really convenient. The tricks in other gamblings were explained except the dice part here. Haha. Thank you!!!!!! <3
http://www.mangago.zone/read-manga/kakegurui/bt/manga/kakegurui/c021/pg-16/
In chapter 21, Yumeko had a gambling battle with Yumemi (the idol). When Yumeko rolled the dice, she made it look like she's controlling it. First, is when she rolled it and "5" appeared which is the Fan Appreciation. Yumeko said it's the only game left she's sure of winning. Second, she rolled the 2 dice (ones and tens place) and "31" showed which is Mary's number.
So my question is... How did Yumeko (purposely) do it? Considering the probability.. 3 vs. 100+ fanclub members. Still, Yumeko doesn't know when is Suzui, Mary and Nail-san's bdays. I'm not sure if I miss something or is she just so lucky to have the dice on her side??? THANK YOU IN ADVANCE! :)