USPS Numeric and Alphanumeric Comparison 3

Question 1

A sorting machine label reads '9261290100130318765432'. The original code is '9261290100130318756432'. Are they the same or different?

Accepted Answer

Different — two digits near the end are transposed

Answer

In position 17-18, the original has 75 while the label shows 76, indicating a transposition error.

Question 2

Which ZIP code is different from the others?
A) 85251
B) 85251
C) 85215
D) 85251

Accepted Answer

C

Answer

Option C shows 85215, where the last two digits (5 and 1) are transposed compared to 85251.

Question 3

Compare lot numbers: LOT-AA-4419 vs LOT-AA-4491. Are they the same or different?

Accepted Answer

Different — the last two numeric digits are transposed

Answer

4419 vs 4491 differ in the third and fourth digits (1 and 9 are transposed).

Question 4

A postal clerk must verify: Invoice #INV-2025-0038-B matches the database entry INV-2025-0038-B. Is it correct?

Accepted Answer

Yes — all characters match exactly

Answer

Both invoice numbers are identical character-for-character, so there is no error.

Question 5

Compare these two serial numbers: SN-7734429X vs SN-7734249X. Are they the same or different?

Accepted Answer

Different — digits in positions 6 and 7 are transposed

Answer

7734429 vs 7734249 — positions 5 through 7 differ (429 vs 249), indicating a transposition.

USPS Error Detection Test Practice Test