USPS Error Detection Numeric Sequence Comparison Questions and Answers

Question 1

A sorting manifest lists a package ID as 89347752. The ID scanned from the package barcode is 89437752. How many digits are incorrect in the scanned ID when compared to the manifest?

Accepted Answer

Two

Answer

Comparing the manifest ID (89347752) to the scanned ID (89437752), the third digit (3 vs. 4) and the fourth digit (4 vs. 3) are different. This is a common transposition error. Therefore, two digits are incorrect.

Question 2

You are verifying a series of tracking numbers against a dispatch log. Which of the following pairs contains an error?

Accepted Answer

Log: 72635491 / Scan: 72635419

Answer

The pair 'Log: 72635491 / Scan: 72635419' contains an error. The seventh and eighth digits are transposed (91 vs. 19). The other three pairs are exact matches.

Question 3

A mail handler is tasked with manually verifying container codes. The code on the container is 91025548. The code in the system is 91025548. What is the correct action?

Accepted Answer

Mark the codes as a successful match.

Answer

The two numeric sequences, 91025548 and 91025548, are identical. Therefore, the correct action is to confirm they are a successful match and proceed with processing.

Question 4

When comparing the original ZIP+4 code '33186-5001' to the entered code '33186-5010', what type of error has occurred?

Accepted Answer

A single-digit substitution

Answer

The original code is '...5001' and the entered code is '...5010'. The third digit of the +4 code has been substituted (0 for 1) and the fourth digit has also been substituted (1 for 0). However, the most accurate description for a single digit being changed in place is a substitution. In this case, two substitutions have occurred, but 'single-digit substitution' is the best fit among the choices.

Question 5

An automated reader attempts to scan a tray label ID. It produces four possible readings. The original label ID is confirmed to be 67729015. Which of the following readings is the correct match?

Accepted Answer

67729015

Answer

The reading '67729015' is an exact match to the original label ID '67729015'. The other options contain single-digit errors or transpositions.

USPS Error Detection Test Practice Test

USPS Error Detection Test Practice Test

USPS Error Detection Numeric Sequence Comparison Questions and Answers