USPS Number Sequence Comparison 2 — Questions and Answers
Question 1: Compare the two sequences and identify the position of the error: Original: 7421 8836 5509 3174 Copy: 7421 8836 5590 3174
- Position 1
- Position 2
- Position 3 (Correct answer)
- Position 4
Correct answer: Position 3
Position 3 differs: '5509' was copied as '5590', with the last two digits transposed.
Question 2: Which pair of number sequences is an EXACT match? A) 28473 91056 / 28473 91056 B) 63819 47203 / 63819 47230 C) 50124 88637 / 50214 88637 D) 71960 32548 / 71960 32584
- Pair A (Correct answer)
- Pair B
- Pair C
- Pair D
Correct answer: Pair A
Only Pair A matches exactly; all other pairs contain transposed digits.
Question 3: Original: 309-555-0172 Copy: 309-555-0127 What type of error occurred?
- A digit was omitted
- Two digits were transposed (Correct answer)
- A digit was substituted with a different digit
- An extra digit was added
Correct answer: Two digits were transposed
The last two digits '72' became '27', which is a transposition error.
Question 4: A postal worker must verify ZIP+4 codes. Which copy matches the original? Original: 90210-4478
- 90210-4478 (Correct answer)
- 90210-4748
- 90201-4478
- 92010-4478
Correct answer: 90210-4478
Only '90210-4478' is an exact match; the other options each contain a transposition or substitution.
Question 5: Original sequence: 14 29 44 59 74 89 Copy: 14 29 44 95 74 89 How many errors are present?
- 0 — the sequences match
- 1 error (Correct answer)
- 2 errors
- 3 errors
Correct answer: 1 error
There is exactly one error: the fourth element '59' was copied as '95'.
Question 6: Compare: Original: 8802 1154 6637 9910 Copy: 8820 1154 6637 9910 Which position contains the error?
- Group 1 (Correct answer)
- Group 2
- Group 3
- Group 4
Correct answer: Group 1
Group 1 differs: '8802' was copied as '8820', swapping the last two digits.
Question 7: A tracking number must be copied exactly. Identify the correct copy. Original: 9400 1118 9922 3456 7890
- 9400 1118 9922 3456 7890 (Correct answer)
- 9400 1118 9922 3465 7890
- 9400 1181 9922 3456 7890
- 9400 1118 9922 3456 7980
Correct answer: 9400 1118 9922 3456 7890
Only the first option is an exact copy; the others each contain one transposed digit.
USPS Number Sequence Comparison 2
Compare the two sequences and identify the position of the error:
Original: 7421 8836 5509 3174
Copy: 7421 8836 5590 3174