Error Checking Test

Error Checking: Core Test 1

1. Question 1 of 20

   Row	Original	Copy
   1	Halstead	Halstead
   2	Brennan	Brennan
   3	Kilbride	Kilbrode
   4	Whitaker	Whitaker

   Which row was copied incorrectly?

   1. Row 1
   2. Row 2
   3. Row 3
   4. Row 4
   Show the answer

   Answer: C. Row 3

   Row 3 reads Kilbride in the original but Kilbrode in the copy: the sixth letter is an o where it should be an i. Both versions are the same length, so the row must be read letter by letter. The other three rows match exactly.

2. Question 2 of 20

   Row	Original	Copy
   1	LS9 8AF	LS9 8AF
   2	BS14 0QR	BS14 0QR
   3	NE27 5TD	NE27 5TD
   4	CV31 3RG	CV31 3GR

   Which row was copied incorrectly?

   1. Row 1
   2. Row 2
   3. Row 3
   4. Row 4
   Show the answer

   Answer: D. Row 4

   Row 4 ends RG in the original but GR in the copy; the final two letters have been transposed. The other three postcodes match character for character.

3. Question 3 of 20

   Reference code: RT-3096

   Which option exactly matches the reference code?

   1. RT-3096
   2. RT-3906
   3. RT-3086
   4. rt-3096
   Show the answer

   Answer: A. RT-3096

   Only option a reads RT-3096 exactly. Option b swaps the 0 and the 9, option c replaces the 9 with an 8, and option d drops both letters to lowercase. All four are the same length, so none can be ruled out on shape alone.

4. Question 4 of 20

   Account	Statement	Ledger
   1042	£4,318	£4,318
   1043	£2,905	£2,905
   1044	£7,260	£7,260
   1045	£1,573	£1,537

   Which account’s balance was transcribed incorrectly?

   1. Account 1042
   2. Account 1043
   3. Account 1044
   4. Account 1045
   Show the answer

   Answer: D. Account 1045

   Account 1045 shows £1,573 on the statement but £1,537 in the ledger: the last two digits are transposed. The other three balances match digit for digit.

5. Question 5 of 20

   Meter	Reading	Log
   M1	24.60	24.60
   M2	18.35	183.5
   M3	31.09	31.09
   M4	27.44	27.44

   Which meter reading was transcribed incorrectly?

   1. Meter M1
   2. Meter M2
   3. Meter M3
   4. Meter M4
   Show the answer

   Answer: B. Meter M2

   Meter M2 reads 18.35 but was logged as 183.5: the decimal point has moved one place to the right, multiplying the value by ten. The digits themselves are unchanged, which is what makes the slip easy to miss.

6. Question 6 of 20

   Reference code: BRT-40917

   Which option exactly matches the reference code?

   1. BRT-40971
   2. BRT-40817
   3. BRt-40917
   4. BRT-40917
   Show the answer

   Answer: D. BRT-40917

   Only option d reads BRT-40917 exactly. Option a swaps the final 17 to 71, option b has 8 as its third digit instead of 9, and option c drops the third letter to lowercase. Every option is the same length, so none can be ruled out on shape alone.

7. Question 7 of 20

   Order	Customer	Units	Value
   3310	Rowntree	5	£120
   3311	Danvers	3	£75
   3312	Kelsall	2	£46
   3313	Ives	8	£210

   Entered: order 3312, Kelsall, 2 units, £48.

   Which detail does not match the reference table?

   1. Order number
   2. Customer
   3. Units
   4. Value
   Show the answer

   Answer: D. Value

   Find the row for order 3312, then check each field. Customer and units match. The value was entered as £48 but the table gives £46, so the value is the detail that does not match.

8. Question 8 of 20

   Consignment reference: HS-6318-CM

   Which option exactly matches the reference?

   1. HS-6381-CM
   2. HS-6318-CM
   3. HS-6318-CN
   4. HS-6218-CM
   Show the answer

   Answer: B. HS-6318-CM

   Only option b reads HS-6318-CM throughout. Option a swaps the final 18 to 81, option c ends in CN rather than CM, and option d changes the second digit from 3 to 2. All four options are the same length, so each must be read block by block.

9. Question 9 of 20

   Row	Original	Copy
   1	PL-2264-RG	PL-2264-RG
   2	PL-2841-RG	PL-2841-RG
   3	PL-2648-RG	PL-2684-RG
   4	PL-2417-RG	PL-2417-RG

   Which row was copied incorrectly?

   1. Row 1
   2. Row 2
   3. Row 3
   4. Row 4
   Show the answer

   Answer: C. Row 3

   Row 3 reads 2648 in the original but 2684 in the copy: the last two digits are transposed. Every other row matches character for character, and all four share the same PL and RG blocks, so only the four middle digits need checking.

10. Question 10 of 20

    Row	Original	Copy
    1	Kearney 4082	Kearny 4082
    2	Ferris 3719	Ferris 3719
    3	Okonkwo 5264	Okonkwo 5264
    4	Bramley 6137	Bramley 6137

    Which row was copied incorrectly?

    1. Row 1
    2. Row 2
    3. Row 3
    4. Row 4
    Show the answer

    Answer: A. Row 1

    Row 1 reads Kearney in the original but Kearny in the copy: the second e has been dropped. The reference number 4082 is correct, which is what makes the row easy to pass over. Each row carries two fields, so both must be checked.

11. Question 11 of 20

    Order	Confirmed	Transcribed
    5540	43,182	43,182
    5541	57,904	57,904
    5542	61,375	61,375
    5543	28,469	28,496

    Which order’s quantity was transcribed incorrectly?

    1. Order 5540
    2. Order 5541
    3. Order 5542
    4. Order 5543
    Show the answer

    Answer: D. Order 5543

    Order 5543 was confirmed at 28,469 but transcribed as 28,496: the last two digits are transposed. The other three figures match digit for digit. No two orders share leading digits, so every figure has to be read in full.

12. Question 12 of 20

    Ref	Supplier	Lead time	Rate
    K204	Halloran	5 days	£19
    K240	Halloran	7 days	£18
    K402	Metcalfe	3 days	£22
    K420	Metcalfe	6 days	£25

    Entered: K240, Halloran, 5 days, £18.

    Which detail does not match the reference table?

    1. Reference
    2. Supplier
    3. Lead time
    4. Rate
    Show the answer

    Answer: C. Lead time

    The table lists four similar references, so the first task is landing on K240 rather than K204. For K240 the lead time is 7 days, but 5 days was entered. Supplier and rate both match. Note that 5 days is the lead time for K204, the reference one digit away, which is what makes the error look plausible. K204 is billed at £19, however, so the entered record cannot belong to that row either.

13. Question 13 of 20

    Staff	Department	Ext	Site
    8734	Payroll	4102	Leeds
    8506	Payroll	4120	Leeds
    8281	Facilities	4210	Bristol
    8218	Facilities	4201	Cardiff

    Entered: staff 8281, Facilities, extension 4201, Bristol.

    Which detail does not match the reference table?

    1. Staff number
    2. Department
    3. Extension
    4. Site
    Show the answer

    Answer: C. Extension

    Staff 8281 has extension 4210, but 4201 was entered: the last two digits are transposed. Department and site both match. Extension 4201 belongs to staff 8218, whose number is 8281 with its last two digits swapped, but that record is sited in Cardiff, not Bristol, so the entry cannot belong to it.

14. Question 14 of 20

    Product codes must be three uppercase letters, a hyphen, then four digits.

    Which entry does not follow the required format?

    1. TRW-4820
    2. MHD-6215
    3. KpL-3074
    4. NBS-9143
    Show the answer

    Answer: C. KpL-3074

    KpL-3074 has a lowercase p as its second letter, where the format requires uppercase throughout. Its hyphen and four digits are correct, which is what makes the slip easy to pass over. The other three entries are fully uppercase.

15. Question 15 of 20

    Postcodes must be recorded with a single space between the two parts.

    Which entry does not follow the required format?

    1. TQ14-5HP
    2. DE12 4RN
    3. SK7 2LW
    4. WA3 6EX
    Show the answer

    Answer: A. TQ14-5HP

    TQ14-5HP separates the two parts with a hyphen rather than a space; it should read TQ14 5HP. The other three entries each carry a single space in the right place.

16. Question 16 of 20

    Files whose code contains R are stored in Archive; files containing C go to Current.

    Which file is stored in the wrong place?

    1. 44R71: Archive
    2. 52C18: Archive
    3. 60R93: Archive
    4. 73C15: Current
    Show the answer

    Answer: B. 52C18: Archive

    52C18 contains a C, so it belongs in Current, but it is stored in Archive. The letter sits in the middle of each code rather than at the start, so every code must be read through before its store can be checked.

17. Question 17 of 20

    Batch reference: DX-5518-TB

    Which option exactly matches the reference?

    1. DX-5581-TB
    2. DX-5518-TP
    3. DX/5518-TB
    4. DX-5518-TB
    Show the answer

    Answer: D. DX-5518-TB

    Only option d reads DX-5518-TB throughout. Option a swaps the middle 18 to 81, option b ends in TP rather than TB, and option c opens with a forward slash rather than a hyphen. All four are the same length, so none can be ruled out on shape alone.

18. Question 18 of 20

    Ref	Van	Depot	Slot
    RG-4182	V-207	Aldridge	08:30
    RG-4128	V-270	Aldridge	09:15
    RG-4812	V-702	Beckwith	10:45
    RG-4821	V-720	Beckwith	10:45

    Entered: RG-4128, van V-207, Aldridge, slot 09:15.

    Which detail does not match the reference table?

    1. Reference
    2. Van
    3. Depot
    4. Slot
    Show the answer

    Answer: B. Van

    RG-4128 is assigned van V-270, but V-207 was entered. Depot and slot both match. Every reference in the table is a rearrangement of the digits 4, 1, 2 and 8, and every van number a rearrangement of 2, 0 and 7, so the row must be fixed first and then read digit by digit. V-207 is the van for RG-4182, the reference whose last two digits are swapped. That run departs at 08:30, though, so the entry cannot belong to it.

19. Question 19 of 20

    Row	Original	Copy
    1	Whitlock 3308	Whitlock 3308
    2	Whitlocke 3380	Whitlocke 3308
    3	Whitlock 3830	Whitlock 3830
    4	Whitlocke 3803	Whitlocke 3803

    Which row was copied incorrectly?

    1. Row 1
    2. Row 2
    3. Row 3
    4. Row 4
    Show the answer

    Answer: B. Row 2

    Row 2 reads 3380 in the original but 3308 in the copy: the third and fourth digits are transposed. The surname Whitlocke is copied correctly on that row. Two traps make this slow: the surnames alternate between Whitlock and Whitlocke, and all four numbers use the same digits, so the copy of row 2 is identical to the original of row 1.

20. Question 20 of 20

    Line	Invoiced	Transcribed
    L1	214,706	214,708
    L2	216,470	216,470
    L3	217,046	217,046
    L4	210,764	210,764

    Which line’s invoiced figure was transcribed incorrectly?

    1. Line L1
    2. Line L2
    3. Line L3
    4. Line L4
    Show the answer

    Answer: A. Line L1

    Line L1 was invoiced at 214,706 but transcribed as 214,708: the final digit is 8 where it should be 6. All four figures use the same six digits in different orders and every one begins with 21, so no figure can be told apart by its shape or its opening. Each pair has to be read to the last digit.