USPS - Error Detection Test Error Detection Alphanumeric Code Verification 1

Question 1

Compare the following two codes: 7MT-2264-QX8 and 7MT-2264-QX8. Is there an error?

Accepted Answer

No error — the codes are identical

Answer

Both codes read 7MT-2264-QX8 exactly. Every character in each segment matches, so there is no error.

Question 2

Compare the following two codes: PK3-8819-ZF5 and PK3-8891-ZF5. Is there an error?

Accepted Answer

Yes, there is an error in the second group of characters

Answer

The second segment differs: the original reads 8819, but the copy reads 8891. The final two digits have been transposed — 19 became 91.

Question 3

Compare the following two codes: DW4-7731-HS6 and DW4-7731-HB6. Is there an error?

Accepted Answer

Yes, there is an error in the third group of characters

Answer

The third segment differs: the original ends with HS6, but the copy shows HB6. The letter S has been incorrectly changed to B.

Question 4

Compare the following two codes: 6YN-4453-CX2 and 6VN-4453-CX2. Is there an error?

Accepted Answer

Yes, there is an error in the first group of characters

Answer

The first segment differs: the original reads 6YN, but the copy shows 6VN. The letter Y has been incorrectly replaced with V, which looks visually similar.

Question 5

Compare the following two codes: 5JC-3384-NR1 and 5JC-3384-NR7. Is there an error?

Accepted Answer

Yes, there is an error in the third group of characters

Answer

The third segment differs: the original ends with NR1, but the copy shows NR7. The digit 1 has been incorrectly changed to 7 at the very last position.

USPS Error Detection Test Practice Test

USPS Error Detection Test Practice Test

USPS - Error Detection Test Error Detection Alphanumeric Code Verification 1