Odd One Out — For the numbers 4025, 7202, 6023, and 5061, identify the single number that does not match the common digit-sum property shared by the others.

Difficulty: Medium

Correct Answer: 5061

Explanation:


Introduction / Context:
Many odd-one-out questions hide a pattern in digit operations. Here we test attentiveness to digit sums.



Given Data / Assumptions:

  • Numbers: 4025, 7202, 6023, 5061.
  • Digit sum means adding all decimal digits.


Concept / Approach:
Compute the digit sum for each value and compare.



Step-by-Step Solution:
4025: 4 + 0 + 2 + 5 = 11.7202: 7 + 2 + 0 + 2 = 11.6023: 6 + 0 + 2 + 3 = 11.5061: 5 + 0 + 6 + 1 = 12.Three numbers have digit sum 11; one has digit sum 12.



Verification / Alternative check:
Any other simple properties (parity, divisibility by 5, etc.) produce multiple mismatches; digit-sum uniformity uniquely isolates the outlier.



Why Other Options Are Wrong:

  • 4025: sums to 11, matching the majority.
  • 7202: sums to 11, matching the majority.
  • 6023: sums to 11, matching the majority.


Common Pitfalls:
Stopping at last-digit patterns (like ending in 5) and missing the consistent digit-sum pattern.



Final Answer:
5061

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