Brian saw some circus vehicles. He saw 17 wheels in all. if 2of the vehicles are cars, how many vehicles are bicycles and tricycles?

A lot of them cuz 17 is a lot of wheels

If two are cars, that's 8 wheels, you need 9 more wheels, so bikes have 2 wheels and trikes have 3. you could have 3 trikes and two cars, or 4 bikes, 1 trike and one car