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Coding and Memory Study Guide for McGraw-Hill's Postal Exams 473/473C

By — McGraw-Hill Professional
Updated on Jun 23, 2011

Part C of Test 473 is called Coding and Memory. In this part, your job is to assign various street addresses to one of four delivery routes. Think of Part C as a mail-sorting exercise, in which you must sort through a big stack of mail and put each piece in one of four bins, each marked for delivery to a specific neighborhood.

Part C is divided into two sections:

  • A Coding Section, which consists of 36 questions to be completed in 6 minutes
  • A Memory Section, which consists of 36 questions to be completed in 7 minutes

You will use the same Coding Guide for both sections of Part C. The first column of the Coding Guide shows the address ranges for each delivery route. The second column shows the delivery route code (A, B, C, or D) for the address ranges shown in the same row as the code. You may assume that each address range runs continuously (no numbers are skipped) from the lowest to the highest number in the range. Some of the street names appear twice, showing two different address ranges.

Coding Section

The Coding Section consists of three segments. You will use the same Coding Guide for all three segments.

  • Segment 1 is an introductory exercise consisting of 4 items to be completed in 2 minutes. Segment 1 is not scored.
  • Segment 2 is a practice exercise consisting of 8 items to be completed in 1 1/2 minutes (90 seconds). Segment 2 is not scored.
  • Segment 3 is the actual Coding Section of the test. This segment consists of 36 items to be completed in 6 minutes. Segment 3 is scored and counts toward your total test score.

Memory Section

The Memory Section consists of four segments. You will use the same Coding Guide for all four segments.

  • Segment 1 is a 3-minute study period, during which you will attempt to memorize the Coding Guide. Segment 1 is not scored, and there are no answers to mark during this segment.
  • Segment 2 is a practice exercise consisting of 8 items to be completed in 1 1/2 minutes (90 seconds). Segment 2 is not scored.
  • Segment 3 is a 5-minute study period, during which you will attempt to memorize the Coding Guide. Segment 3 is not scored, and there are no answers to mark during this segment.
  • Segment 4 is the actual Memory Section of the test. This segment consists of 36 items to be completed in 7 minutes. Segment 4 is scored and counts toward your total test score.

Part C of the test provides a series of practice exercises preceding the 36 scored coding items and, similarly, a series of practice exercises preceding the 36 scored memory items. The same Coding Guide is used throughout Part C. So, by the time you finish the practice exercises, you’ll be familiar with the Coding Guide, which will make your job during the scored portion easier.

Coding Guide

Now, here’s an example of a Coding Guide. Just like the one you’ll encounter on the actual test, this example uses five different street names, but some of these street names appear in two different coded categories (delivery routes).

Coding Guide
Address Range Delivery Route
300–700 Hartford Blvd. 10–25 Oswago Road 1800–6000 N. 23rd St. A
26–40 Oswago Road 701–1000 Hartford Blvd. B
150–250 Point Lookout Loop 50000–75000 Rose St. SW 6001–12000 N. 23rd St. C
All mail that does not fall in one of the address ranges listed above D
In interpreting the Coding Guide, you are to assume that no numbers within an address range are skipped. For example, in the preceding example, the range “1800–6000 N. 23rd St.” includes 1800, 1801, 1802, 1803, and so forth. So, you know that any N. 23rd St. address within that range is included in Delivery Route A. The preceding Coding Guide example illustrates the following key features of the Coding Guide that you’ll encounter on the actual test:

  • The Coding Guide covers street addresses only. Cities, states, and ZIP codes are excluded.
  • All addresses refer to streets. No Post Office Boxes are included.
  • The Coding Guide lists five different streets altogether.
  • Three streets appear twice in the Coding Guide, while the remaining two streets appear only once.
  • Delivery Route D covers any address that does not fall into one of the delivery routes listed in categories A, B, and C.

One additional feature requires special explanation. In the Coding Guide example, notice that for street names appearing twice, the second address range starts where the first one left off. For example, the Hartford Blvd. range in Route A ends at 700, and the range in Route B begins at 701. This is how the Coding Guide on the actual test will probably organize address ranges. However, it is possible that certain numbers will be skipped between two address ranges for the same street. For example, consider the following two address ranges:

45–60 Park Drive (Delivery Route A)

75–90 Park Drive (Delivery Route C)

In this example, any address on Park Drive falling between 60 and 75, or, in other words, 61 through 74, would not be included in either delivery route, and the correct answer for any such address would be D.

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