Alphabet–number mapping analogy — use letter positions to complete the pair. K/T : 11/20 :: J/R : ?

Introduction / Context:
This verbal–numeric analogy relies on alphabetical positions. Each letter is converted to its position in the English alphabet, and the same mapping is applied across both pairs.

Given Data / Assumptions:

• K/T maps to 11/20.
• We must find the corresponding numbers for J/R.
• Letter positions are A=1, B=2, …, Z=26.

Concept / Approach:
The pattern is straightforward positional encoding: replace each letter with its ordinal position. K is 11, T is 20; this matches the left example and validates the approach.

Step-by-Step Solution:
Check given mapping: K → 11 and T → 20. This perfectly fits “11/20.” Apply to J/R: J is the 10th letter; R is the 18th letter. Therefore, J/R maps to 10/18.

Verification / Alternative check:
No arithmetic beyond ordinal positions is needed. Cross-check with a standard alphabet reference to ensure no off-by-one mistakes.

Why Other Options Are Wrong:
11/19: would correspond to K/S, not J/R. 10/8: mismaps R from 18 to 8. 9/10 or 8/9: do not match J/R ordinal positions.

Common Pitfalls:
Confusing zero-based with one-based indexing; here, A is 1, not 0.

Final Answer:
10/18