Address Matching, Date & City Matching, Classification of Centre Codes and Roll Numbers

This section of the General Intelligence and Reasoning paper focuses on your ability to observe details, identify patterns, and apply logical rules to classify and match information. These types of questions test your attention to detail, analytical skills, and ability to work with coded information. We will break down each type of matching and classification problem to ensure you are well-prepared.

Address Matching

Address matching questions require you to compare two addresses and determine if they are identical or if there are any discrepancies. These discrepancies can range from a single misspelled word to a missing or incorrect digit in a postcode. The key here is meticulous comparison.

What is Tested?

Your ability to:

• Scan and compare textual information accurately.
• Identify minor differences in spellings, numbers, and punctuation.
• Systematically check each component of an address (name, street, city, state, postcode).

How to Approach Address Matching Questions:

1. Read the Question Carefully: Understand what you need to do – find the exact match, or find the one with a specific type of error.
2. Break Down the Addresses: Mentally or physically divide each address into its core components:
   • Name (if provided)
   • House/Flat/Building Number
   • Street Name/Number
   • Area/Locality
   • City
   • District (if specified)
   • State
   • Pincode/Postcode
3. Compare Component by Component: Start from the top (e.g., Name or House Number) and compare each part of the given address with the options provided.
4. Look for Specific Differences: Pay close attention to:
   • Spelling mistakes (e.g., "Street" vs. "Streat", "Road" vs. "Rood").
   • Incorrect or missing numbers (e.g., House number, pincode).
   • Punctuation errors (e.g., missing commas, incorrect use of periods).
   • Inconsistent abbreviations (e.g., "North" vs. "N.", "Avenue" vs. "Ave.").
   • Transposed digits in numbers (e.g., pincode 110001 vs. 110010).
5. Mark the Correct Option: If you find an exact match, select it. If the question asks for the one with a specific error, identify that address. If the question asks to identify the incorrect address among identical ones, look for the outlier.

Example:

Given Address: Mr. Ramesh Kumar, 12, Green Park Extension, Sector-15, Noida, Uttar Pradesh - 201301

Options: (A) Mr. Ramesh Kumar, 12, Green Park Extension, Sector-15, Noida, Uttar Pradesh - 201301 (B) Mr. Ramesh Kumar, 12, Green Park Extention, Sector-15, Noida, Uttar Pradesh - 201301 (C) Mr. Ramesh Kumar, 12, Green Park Extension, Sector-15, Noida, Uttar Pradesh - 201310 (D) Mr. Ramesh Kumar, 21, Green Park Extension, Sector-15, Noida, Uttar Pradesh - 201301

Analysis:

• Option (A) is an exact match.
• Option (B) has a spelling error: "Extension" is misspelled as "Extention".
• Option (C) has a pincode error: 201301 is written as 201310.
• Option (D) has a house number error: 12 is written as 21.

If the question asks for the exact match, the answer is (A). If it asks for the one with a spelling error, it's (B). If it asks for the one with a pincode error, it's (C).

Date & City Matching

These questions test your ability to match dates and city names, often in a specific format or context. It can involve verifying the correctness of a date, matching a city to its state or region, or identifying inconsistencies.

What is Tested?

Your ability to:

• Recognize standard date formats (DD/MM/YYYY, MM/DD/YYYY, YYYY-MM-DD, etc.).
• Identify valid and invalid dates (e.g., February 30th).
• Match city names with their corresponding states or countries.
• Spot discrepancies in date and city information.

How to Approach Date & City Matching Questions:

1. Understand the Format: Note the format in which dates and cities are presented. Are dates in DD/MM/YYYY or MM/DD/YYYY? Are cities listed with states?
2. Validate Dates: Check if the date is logically correct.
   • Months range from 1 to 12.
   • Days range from 1 to 31 (depending on the month).
   • Consider leap years for February (29 days in a leap year, 28 otherwise). A year is a leap year if it is divisible by 4, unless it is divisible by 100 but not by 400.
3. Verify City-State Correspondence: Ensure the city mentioned actually belongs to the state or region it's paired with. This requires general knowledge.
4. Compare Systematically: Compare the given date and city information with the options, looking for exact matches or specific errors as required by the question.

Example:

Given Information: Date: 15/08/1947, City: Delhi

Options: (A) Date: 15/08/1947, City: Delhi (B) Date: 08/15/1947, City: Delhi (C) Date: 15-Aug-1947, City: Delhi (D) Date: 15/08/1947, City: Mumbai

Analysis:

• Option (A) is an exact match in terms of numerical date and city name.
• Option (B) uses a different date format (MM/DD/YYYY) which is a discrepancy if the expected format is DD/MM/YYYY.
• Option (C) uses a textual month, which is a format difference.
• Option (D) has an incorrect city.

The answer depends on what the question asks. If it asks for the exact numerical match in DD/MM/YYYY format, it's (A). If it asks for the one with the correct city, it's (A), (B), and (C).

Classification of Centre Codes and Roll Numbers

This involves understanding how codes and roll numbers are structured and classifying them based on certain rules or patterns. Centre codes often represent geographical locations, examination batches, or other administrative details. Roll numbers are unique identifiers for candidates.

What is Tested?

Your ability to:

• Identify patterns in alphanumeric codes and numbers.
• Understand the logic behind the assignment of centre codes (e.g., first two digits for state, next two for district, etc.).
• Classify items based on shared characteristics derived from codes.
• Deduce rules from given examples to classify new items.

How to Approach Classification Questions:

1. Examine the Given Examples: Look at the provided centre codes or roll numbers and their classifications. Identify common features within each category.
2. Break Down the Codes/Numbers: If the codes have a structure (e.g., first few digits represent a state, a letter represents a gender), analyze these components.
3. Identify the Basis of Classification: Determine the rule used to group the items. Is it based on:
   • The first digit(s)?
   • The last digit(s)?
   • The presence or absence of letters?
   • The total number of digits/characters?
   • A specific range of numbers?
   • Geographical area represented by code segments?
4. Apply the Rule to the Options: Test each option against the identified rule to see which category it belongs to.
5. Look for Outliers: Sometimes, you are given a set of items and asked to find the one that does not belong to the group. This requires identifying the common rule for most items and then finding the one that breaks it.

Example:

Instructions: Classify the following centre codes based on the pattern observed. Codes: 1201, 1205, 1302, 1401, 2103, 2108 Classification Rule: Codes starting with '12' or '13' are Category A. Codes starting with '14' or '21' are Category B.

Question: Which of the following centre codes belongs to Category B? (A) 1209 (B) 1311 (C) 2115 (D) 1400

Analysis:

• Category A: Codes starting with '12' or '13'. Options (A) and (B) fall here.
• Category B: Codes starting with '14' or '21'. Options (C) and (D) fall here.

The question asks for a code in Category B. Both (C) and (D) fit the description based on the provided rule. This highlights the importance of precise question wording. Assuming the question intended to ask for *one* code that fits the rule, and perhaps there's a further sub-classification not explicitly stated, or the options are designed to test the primary rule. If we strictly follow the rule, both C and D are valid Category B codes. If there was a specific example like '1401' belongs to Category B, and '2103' belongs to Category B, then we look for a code starting with 14 or 21.

Let's refine the example for clarity: Suppose the given codes are: 1201 (Zone 1), 1205 (Zone 1), 1302 (Zone 1), 1401 (Zone 2), 2103 (Zone 2), 2108 (Zone 2). The rule is: Codes starting with '12' or '13' are Zone 1. Codes starting with '14' or '21' are Zone 2. Now, if asked: Which code belongs to Zone 2? (A) 1209 (B) 1311 (C) 2115 (D) 1100 Here, option (C) 2115 starts with '21', fitting the rule for Zone 2. Option (D) 1100 does not start with '14' or '21'.

Classification of Roll Numbers

Roll numbers often have a hidden structure. For instance, the first few digits might indicate the year of examination, followed by the region, and then a serial number. Understanding this structure is key to classification.

Example:

Roll Numbers: 230119001, 230119005, 230219010, 230120002, 230120015

Possible Structure Deduction:

• '23' could be the exam code.
• '01' or '02' could be the region code.
• '19' or '20' could be the year.
• The remaining digits are serial numbers.

Question: Which of the following roll numbers belongs to the year 2019? (A) 230119001 (B) 230220005 (C) 230120010 (D) 230219015

Analysis:

• The year is represented by the 5th and 6th digits.
• Roll numbers ending in '19' belong to 2019.
• Option (A) has '19' as the year digits.
• Option (D) also has '19' as the year digits, but the region code '02' is different from '01' in (A).

If the question asks for *any* roll number from 2019, both (A) and (D) could be candidates depending on other factors. If the question specifies a particular region *within* 2019 (e.g., Region 01), then (A) would be the sole answer. This shows how crucial it is to identify *all* parts of the code's structure.