How many tiger barbs can fit in a 10 gallon?

I have a 10 gallon aquarium sitting around and i'm thinking about setting it up seeing all i need is some gravel and plants/decorations. I already have a 14 gallon tropical community tank set up and i know what i'm doing. So how many tiger barbs could i fit in a 10 gallon tank? I've heard that the absolute maximum would be 10 but i think maybe like 5-6 or 7? And then maybe some ghost shrimp too. What do you think?