At this present economic inflation in some countries and you are given three (3 btc) bitcoin to be spend within period of three (3) months for other investment that will give you return of income that worth values of three bitcoin that has been given to you to spend within three months time...my question is that as a cryptocurrency investor and bitcoin investors what investment can you join differently that will give you more than the value of bitcoin given to you? Both in your country and any other countries you maybe?
If I'm not mistaken, you are asking for an investment that will gives us 100% profit in the span of 3 months' time? At least that's what I understand with your post because if that's the case then I don't think there's any safe investment that will double your money in just 3 months.
If there's a way that you can double your 3 BTC in 3 months, I would think of investing into HYIP's (which is kind of unpopular already), use it for futures trading or use it to gamble. If you will see, those 3 are very risky investment and the assurance of your 3 BTC turning into 6 BTC in just 3 months is very low to almost zero (unless your either lucky or good at trading). Investing in real estate? It might be the safest, but it will not guarantee to double your money as well.
Overall, this is very hard to do, but not impossible to happen. Can I ask why are you asking?