Practice Test GeeksUSPS Error Detection Test Practice Test
← All USPS Flashcard Decks

Suite and Apartment Number Errors Flashcards

7 cards from real USPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Suite and Apartment Number Errors flashcards as text

  1. Compare the two address entries and identify any error: Entry 1: 450 Maple Ave, Apt 3B, Boston, MA 02101 Entry 2: 450 Maple Ave, Apt 3D, Boston, MA 02101

    Answer: There is an error in the apartment number

    Entry 1 shows 'Apt 3B' while Entry 2 shows 'Apt 3D,' indicating a letter substitution error in the apartment designation.

  2. Which type of error is present when comparing 'Apt 7' with 'Apt 17'?

    Answer: Insertion error

    An insertion error occurs when an extra character is added; 'Apt 17' contains an inserted digit '1' not present in 'Apt 7.'

  3. A data entry clerk copies an address record: Original: 1234 Oak Street, Suite 200, Chicago, IL 60601 Copy: 1234 Oak Street, Suite 2000, Chicago, IL 60601 What type of error was made?

    Answer: Insertion error in the suite number

    An extra zero was inserted into the suite number, changing '200' to '2000,' making this an insertion error.

  4. Compare these two mailing records: Record 1: 789 Elm Street, Floor 3, Room 14, New York, NY 10001 Record 2: 789 Elm Street, Floor 3, Room 41, New York, NY 10001 The discrepancy is:

    Answer: A transposition error in the room number

    The room number '14' in Record 1 becomes '41' in Record 2, with digits 1 and 4 switched in position — a classic transposition error.

  5. When comparing suite numbers in two address records, which pair represents a transposition error?

    Answer: Suite 301 vs Suite 310

    In 'Suite 310,' the digits 0 and 1 from 'Suite 301' have been switched in position, which is the definition of a transposition error.

  6. In USPS address verification, what is the term for the apartment, suite, or unit number component of an address?

    Answer: Secondary address unit designator

    The USPS uses 'secondary address unit designator' to refer to apartment, suite, unit, or other sub-building identifiers in a mailing address.

  7. Compare these two entries: Entry A: 5520 Harbor Dr, Unit 4C, Miami, FL 33101 Entry B: 5520 Harbor Dr, Unit 4G, Miami, FL 33101 What is the error?

    Answer: Letter substitution error in the unit designation

    The letter 'C' in Entry A has been replaced with 'G' in Entry B, making this a substitution error in the unit's letter designation.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. We have not yet matched this exam's facts to an official source, so confirm fees, dates and rules with the exam body. Not reviewed by a subject-matter expert. Editorial policy