The members of a bank are Mr. A, Mr. B, Mrs. C, Mrs. D, Mr. E and Miss F. The positions they occupy are Manager, Asstt. Manager, Cashier, Steno, Teller and a Clerk, though not necessarily in order. The Asstt. Manager’s Grandson. Cashier is Stenographer’s son-in-law. Mr. A is bachelor. Mrs. D is teller’s step-sister and Mr. E is Manager’s husband. Mr. B cannot have grandson or son-in-law as he is only 20 years old. D and F are not Manager.