6. It was suspected that two babies had been exchanged in a hospital. Mr. and Mrs. Jones received baby #1 and Mr. and Mrs. Simon received baby #2. Blood typing tests on the parents and the babies showed the following: Mr.
Jones: Type A Mr. Simon: Type AB Mrs. Jones: Type O Mrs. Simons: Type O Baby #1: Type A Baby #2 Type O Were
the babies switched? How do you know whether they were or they weren't?