What are the possible blood types for the offsprings male w/AB type and female w/AO?

Question

What are the possible blood types for the offsprings male w/AB type and female w/AO?

Answer 1

male gamete: A or B

female gamete: A or O

So possible offspring genotypes are:

AA AO AB BO  (do a table if you need to do)

Corresponding phenotypes are:

A A AB B  respectively

So the possible blood types are:

A, AB, B

Probabilities are:

1/2 1/4 1/4