Yes, it is possible. Parents who are O positive may have children who are O+ or O-, depending on the parents' genotypes.
If the mother's genotype is AO, then it is possible that the child can be type O-
If the mother's genotype is AO, then it is possible that the child can be type O-
B positive
No.
Yes, it is possible for both mother and father to be RH positive and a child to be RH negative.
If mother is heterozygote yes.
It depends. If the mother of the child is A positive as well, the child will be A positive. This is also true if the mother is a type O. It wont be possible if the mother is B positive, since the child will be AB positive (the blood types are codominant).
Yes, it would be possible if the mother had type A blood.
Yes, if both parents have genotype AO.
Yes, it is possible for a child to have O positive blood type if one parent is O positive and the other parent is A positive. The child could inherit the O allele from the O positive parent and the A allele from the A positive parent.
yes
Yes, this is possible. only if the mother's alleles are Heterozygous (Rh+Rh-).