Select the odd word/letters/number/number pair from the given alternatives.

Let's analyze the relationship between the digits for each number, specifically checking the rule: First Digit−Second Digit=Third Digit.
Option A (532): 5−3=2 (Valid)

Option B (413): 4−1=3 (Valid)

Option C (111): 1−1=0
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=1 (Invalid)

Option D (541): 5−4=1 (Valid)

Since option C does not follow the pattern established by the other numbers, 111 is the odd one out.