Answer:
0.25
Step-by-step explanation:
Given that a woman with blood type O is expecting a child. Her husband is blood type A. Both the woman’s father and her husband’s father had blood type B.
To find out the probability that the child will have type O blood
We have that a child blood group does not depend on parents or grand parents.
Each child is borne independent to have any one of 4 blood groups with equal chance
Hence prob that the child have type O = 1/4 =0.25
