At a carnival, Ali bought 9 packs of 16 tickets each. He has used 38 of the tickets so far. How many tickets does he ha

ve left?

Ali bought a total of 9 x 16 = <<9*16=144>>144 tickets.
He has used 38 tickets, so he has 144 - 38 = <<144-38=106>>106 tickets left. Answer: \boxed{106}.