how many free throws

[DrPete]

Originally Posted by Camron Rust

Actually, you don't. The ball remains live until the try ends, even if a foul has been called. So, it is quite possible to have a foul involving the shooter and another foul elsewhere without either being intentional or flagrant. It may be uncommon, but it is certainly possible.

Camron is correct, the ball remains live while the try is in flight, and the airborne shooter returns to the floor. It still would be uncommon to have two fouls like described in the original post.