this is like asking:
I had 242USD, how to make 266USD in best way? if you will tell me, I will give you 10USD and I won 14USD.
grow up kid, this is just insane:)
He said 'if' you had 1 BTC.
He's asking a hypothetical question with regards to how would one make 10% of his investment in 1-3 days and he's offering a reward of $10 for the best idea which he might be able to apply to even bigger investment, he's not looking to just make $14 so that he can give $10.
Try to understand the context of the post before jumping in with your smart ass replies.