Three students, J, K, and L, are sitting in a row. J is sitting at one end. K is sitting immediately next to J. Who is sitting in the middle?
Show answer & explanation
Correct answer: A
Explanation
There are 3 positions in the row: 1, 2 (middle), and 3.
• Case 1: If J sits at the left end (Position 1), K must be next to J at Position 2, leaving L at Position 3.
Arrangement: J – K – L
• Case 2: If J sits at the right end (Position 3), K must be next to J at Position 2, leaving L at Position 1.
Arrangement: L – K – J
In both possible cases, K is sitting in the middle.
Therefore, the correct answer is (A) K.