Q6Numerical4 Marks21 Dec 2025
Two families have decided to enter into an alliance by marriage. The first family has 4 sons () and the second family has 4 daughters (). To avoid impropriety, the families insist that each one must marry someone either their own age, or someone one position younger or older. The graph representing these agreeable marriages is given below. How many different acceptable marriage arrangements are possible?

Press Enter to check.