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Number 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 Number Sequence Comparison flashcards as text

  1. Original: 55301 44892 73016 Copy: 55301 44892 73061 The error involves which kind of change?

    Answer: Two adjacent digits were swapped

    In the last group, '16' was transposed to '61', swapping two adjacent digits.

  2. How many of these four copies contain an error compared to the original '482-31-9057'? 1) 482-31-9057 2) 482-13-9057 3) 482-31-9057 4) 482-31-9507

    Answer: 2 copies have errors

    Copies 2 and 4 contain errors ('31' transposed to '13' and '57' transposed to '07' respectively); copies 1 and 3 are correct.

  3. Original: 0039 2281 7754 Copy: 0039 2281 7745 At what position within the last group does the error occur?

    Answer: Digits 3–4

    The last two digits of group 3, '54', were transposed to '45'.

  4. A clerk records parcel weights as number strings. Select the entry that was recorded WITHOUT error. Original source list: 1034 2987 4561 8820

    Answer: 1034 2987 4561 8820

    The first entry matches the source list exactly; all others have one transposition.

  5. Original: 6 12 18 24 30 36 Copy: 6 12 18 42 30 36 What is the most likely type of keying error in this sequence?

    Answer: Transposition of digits within a number

    '24' was keyed as '42', swapping the two digits — a classic transposition error.

  6. Which sequence correctly continues the pattern AND matches the copy? Original: 103 206 309 412 515 Copy: 103 206 309 412 515

    Answer: Both are identical — no error

    Both sequences are identical; a test-taker should confirm all five elements match before marking 'no error.'

  7. Original: 77-4921-0038 Copy: 77-4912-0038 Which segment contains the error and what changed?

    Answer: Middle segment — two digits swapped

    The middle segment changed from '4921' to '4912', swapping the third and fourth digits.