I cant pin point the exact words you are saying ,but all i can say is that investment this days are very risky,like bitcoin mining its one of the known investment site that will lead into scam.
i mean if you will start your own mining business and buy those expensive equipments,,
& u may want some partners or investors to cover up your huge capital.,
or say u buy an operational mining or betting site...
what is likely the fair % you would give them in case you want them to invest on you..