So here I have a friend who's inviting me here on the said gambling investment. It's just simple, you'll send your bitcoin (investment on any amount) on that person then he's going to play using the money collected. After 7 days, your investment will be doubled and the money will be sent back to you after deducting the trans fee. There is a chance of losing but if your money loses, you'll. Be given a 10% refund.
Someone already tried this? Safe or not??
First you need to know if your friend's gambling investment is legit because there is still a chance that it is a scam. You did not even know the details of the gambling investment. But if you trust your friend and you want to take risk then your invested bitcoin can be doubled. There is still many ways to invest your bitcoin that is not risky and can earn more bitcoin. It is your choice.