how many offers do i need to make before i get a yes?

[Mario T.]

I'm fairly new to real estate investing and have done a lot of marketing to try to wholesale deals. How many offers do i need to make before someone says yes?  I'm getting creative with not just negotiating price but terms as well for buy and hold investors. 

Been doing this for about 9 months now with no success. I've made 6 offers out that 9 months. What's the magic formula or number I should be striving for?