How many cars do you have?

How many books did you read this year?

How many brothers do you have?

How many coats do you have?

How many people work in this building?

How much does your car cost?

How much coffee do you want?

How much do you like him?

How much sugar do we have left?

How much juice did you want?

Explicação: How many é utilizado com substantivos contáveis e how much com substantivos incontáveis.