Reversed alphabet indexing – If the English alphabet is written in reverse order (Z to A left-to-right), find the 10th letter to the left of the 10th letter counted from the right end of that reversed arrangement.

Introduction / Context:
Alphabet test questions often flip the usual A→Z orientation and then ask you to navigate left/right relative to a reference letter. Here, the alphabet is first written in reverse order from left to right as Z, Y, X, …, B, A. We must first locate the “10th letter from the right” in this reversed lineup, and then, starting from that letter, move 10 positions to the left to identify the final letter. Getting the orientation clear is the entire trick.

Given Data / Assumptions:

• The reversed alphabet written left-to-right is: 1:Z, 2:Y, 3:X, 4:W, 5:V, 6:U, 7:T, 8:S, 9:R, 10:Q, 11:P, 12:O, 13:N, 14:M, 15:L, 16:K, 17:J, 18:I, 19:H, 20:G, 21:F, 22:E, 23:D, 24:C, 25:B, 26:A.
• “From the right” means counting inward from the A side (rightmost end of the written line).
• “To the left of” means moving toward the Z side (smaller reversed indices).

Concept / Approach:
In a 26-letter line, the 10th letter from the right has reversed index 26 − (10 − 1) = 17. After finding that reference, moving 10 to the left means subtracting 10 from the reversed index: 17 − 10 = 7. The letter at reversed index 7 is T. Doing the arithmetic on indices avoids mistakes from visual miscounting and ensures consistency under reversal.

Step-by-Step Solution:
List reversed indices to anchor: … 7:T, 8:S, 9:R, 10:Q, 11:P, 12:O, 13:N, 14:M, 15:L, 16:K, 17:J …Find the 10th from right: index = 26 − 9 = 17 → letter J.Move 10 to the left: 17 − 10 = 7 → letter T.Therefore, the required letter is T.

Verification / Alternative check:
Use the mapping between normal and reversed positions: rpos(letter) = 27 − pos(letter). If you compute the normal position for the final index, rpos=7 corresponds to pos=20 (since 27 − 7 = 20), and pos=20 is T. This cross-check confirms the result is consistent.

Why Other Options Are Wrong:

• S/V/G/R are at reversed indices 8/5/20/9 respectively and do not match the calculated index 7 after the two-step movement.

Common Pitfalls:
Mixing up left/right after reversal, or accidentally starting from the normal A→Z order. Another frequent error is to count 10 positions incorrectly by including/excluding the starting letter. Here, “to the left of” means move a full 10 positions away from the reference, not count the reference itself.

Final Answer:
T