Question

If A is younger than K, which of the following statements need not be true?

• A. K was born in 1992
• B. M was born in 1994
• C. B was born in 1991
• D. A was born in 1993
• E. None

Answer 1

The correct option is B M was born in 1994

Given A is younger than K.
According to the given condition, the eldest daughter is born in 1990. So, all the daughters are born in the period 1990 to 1995.
The given data can be arranged in the tabular form as:

Name of the daughter	Birth Year
S	1990
B	1991
K	1992
A	1993
H or M	1994
H or M	1995

Hence, from all the given options only option (B) is not true i.e., we can't determine whether M is born in 1994 or 1995.