Alphabet Test — “Find the middle letter between the 4th and the 16th letters in the English alphabet.” (Positions: 4 → D; 16 → P; midpoint = ?)

Introduction / Context:
A straightforward midpoint problem with both positions given from the left. Average indices to get the middle letter.

Given Data / Assumptions:

• L=4 → D.
• L=16 → P.

Concept / Approach:
Midpoint index M = (4 + 16)/2 = 10; L=10 is J.

Step-by-Step Solution:

Verification / Alternative check:
D→J is 6 steps; J→P is also 6 steps, confirming the midpoint.

Why Other Options Are Wrong:
They sit one step to either side (I/K/L) or further.

Common Pitfalls:
Counting letters instead of positions; averaging indices is faster and safer.

Final Answer:
J