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Numeric Sequence Comparison 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 Numeric Sequence Comparison flashcards as text
  1. Compare the two sequences and identify the error: Sequence A: 7842 3916 5027 4483 Sequence B: 7842 3916 5027 4483

    Answer: The sequences are identical

    Both sequences are exactly the same with no differences in any group.

  2. Compare the two ZIP+4 codes: Code A: 90210-3847 Code B: 90210-3874

    Answer: The last two digits of the extension are transposed

    The extension digits '47' in Code A appear as '74' in Code B, indicating a transposition error.

  3. A postal worker checks a tracking number: Original: 9400 1118 9922 3301 4567 Entered: 9400 1118 9922 3301 4576

    Answer: Error in group 5

    Group 5 shows '4567' in the original but '4576' in the entered version — the last two digits are swapped.

  4. Which pair of numeric sequences contains an error? Option A: 33142 / 33142 Option B: 77801 / 77801 Option C: 48205 / 48025 Option D: 60601 / 60601

    Answer: Option C

    Option C has '48205' vs '48025' — the middle two digits '20' are transposed to '02'.

  5. Compare the route numbers: Route A: 0044-2293-1187 Route B: 0044-2293-1178

    Answer: The last two digits of group 3 are transposed

    Route A ends in '87' while Route B ends in '78', indicating the final two digits were transposed.

  6. A mail sorter verifies a barcode string: Original: 5 2 9 1 4 7 3 8 6 Entered: 5 2 9 1 4 7 8 3 6

    Answer: Positions 7 and 8 are swapped

    Positions 7 and 8 are '3 8' in the original but '8 3' in the entered version.

  7. Compare the two apartment number sequences: List A: 101, 102, 104, 105, 106 List B: 101, 102, 103, 105, 106

    Answer: List A skips a number

    List A is missing 103 between 102 and 104, while List B has the correct sequence 101–106 minus 104.