Correct option is C
Given:
There are 4 people: A, B, C, D
4 professions: doctor, teacher, engineer, lawyer
Age clues are provided.
Solution:
Let's write the age-related clues step-by-step:
The teacher is older than B but younger than D
So:
D > Teacher > B … (i)
B is older than the doctor and younger than C
So:
C > B > Doctor … (ii)
Now, combine both statements: From (i): D > Teacher > B
From (ii): C > B > Doctor
So, overall: D > Teacher > B > Doctor
and
C > B > Doctor
Now if we try to place all people accordingly:
C is older than B, and D is older than the teacher.
So possible relative order (from oldest to youngest):
D > Teacher > B > Doctor
From this, we can see:
D is older than the teacher
Teacher ≠ D → So D is not the teacher
B is not the teacher
Doctor is younger than B, so D ≠ Doctor as well
Because D is oldest, and the doctor is younger than B, we conclude:
D is not the doctor → Correct and conclusive
Important Key Points:
Use inequality chains to place individuals in order of age.
D is the oldest, doctor is younger than B → eliminates D as doctor.
Other options can't be concluded definitively with given data.
Knowledge Booster:
(A) A is the engineer – Not enough info about A.
(B) B is the lawyer – No profession-age link for B.
(C) C is the teacher – C is older than B, but could be older than the teacher too; no direct proof.
(D) is the only conclusive inference.
