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Question

Direction: The likes and professions of five friends Rosy, Mary, Lily, Andy and Daisy are given. Consider the following information and answer questions based on it.

1. Rosy likes Yellow and is a Student.

2. The Librarian likes Green.

3. Mary and Andy like Purple and Blue respectively and neither of them is a Teacher.

4. Lily likes Brown and the Inspector likes Blue.

5. One of the five is a Principal. 

Which among the following is the wrong pair?

A. Andy - Inspector

B. Purple - Principal

C. Daisy - Green

D. Rosy - Teacher

The correct answer is

D

Analyzing Friends' Likes and Professions

This question requires us to use the given clues to match each friend with their specific like and profession. We need to logically deduce the relationships based on the provided information and then identify the incorrect pairing among the options.

Step-by-Step Deduction Process

Let's break down the clues and build the relationships:

  1. Clue 1: Rosy likes Yellow and is a Student.
  2. Clue 2: The Librarian likes Green.
  3. Clue 3: Mary and Andy like Purple and Blue respectively, and neither of them is a Teacher.
  4. Clue 4: Lily likes Brown and the Inspector likes Blue.
  5. Clue 5: One of the five is a Principal.

Now, let's combine these clues to determine the full set of relationships:

  • From Clue 1, we know: Rosy - Likes Yellow - Is a Student.
  • From Clue 3, we know: Mary Likes Purple. Andy Likes Blue.
  • From Clue 4, we know: Lily likes Brown. The Inspector likes Blue. Since Andy likes Blue (Clue 3), Andy must be the Inspector. So: Andy - Likes Blue - Is an Inspector.
  • We know Lily likes Brown (Clue 4). So: Lily - Likes Brown.
  • From Clue 2, we know the Librarian likes Green. We have determined the likes for Rosy (Yellow), Mary (Purple), Andy (Blue), and Lily (Brown). The only remaining like is Green. The only remaining friend is Daisy. Therefore, Daisy must like Green, and based on Clue 2, Daisy must be the Librarian. So: Daisy - Likes Green - Is a Librarian.
  • Now let's look at the professions. We have Rosy (Student), Andy (Inspector), and Daisy (Librarian). The remaining professions are Teacher and Principal.
  • Clue 3 states that neither Mary nor Andy is a Teacher. We already know Andy is the Inspector. So Mary is not a Teacher. Rosy is a Student, Daisy is a Librarian, and Andy is an Inspector. This leaves Lily and Mary. Since Mary is not the Teacher, Lily must be the Teacher. So: Lily - Likes Brown - Is a Teacher.
  • The only remaining friend is Mary. The only remaining profession is Principal (Clue 5). Therefore, Mary must be the Principal. So: Mary - Likes Purple - Is a Principal.

Summary of Relationships

We can summarize our findings in a table:

FriendLikeProfession
RosyYellowStudent
MaryPurplePrincipal
LilyBrownTeacher
AndyBlueInspector
DaisyGreenLibrarian


 

Analyzing the Options to Find the Wrong Pair

Let's check each given option against our deduced relationships:

  • Option A: Andy - Inspector

According to our table, Andy is indeed the Inspector. This is a correct pair.

  • Option B: Purple - Principal

The person who likes Purple is Mary. Mary is also the Principal. This option states that the person who likes Purple is the Principal, which is true (Mary). This is a correct association.

  • Option C: Daisy - Green

According to our table, Daisy likes Green. This is a correct pair.

  • Option D: Rosy - Teacher

According to our table, Rosy is a Student, and Lily is the Teacher. This pairing is incorrect.

Therefore, the wrong pair among the given options is Rosy - Teacher.

Revision Table: Friends, Likes, and Professions

FriendLikeProfession
RosyYellowStudent
MaryPurplePrincipal
LilyBrownTeacher
AndyBlueInspector
DaisyGreenLibrarian


 

Additional Information: Logic Puzzles and Deduction

This type of question is a common form of logic puzzle, often called a deductive reasoning puzzle or matrix logic puzzle. Solving them involves piecing together clues to deduce relationships between different sets of items (in this case, friends, likes, and professions). The key is to organize the information systematically and use a process of elimination to arrive at the unique solution. These puzzles help improve critical thinking, logical reasoning, and attention to detail.

Steps typically involved:

  • Read all clues carefully.
  • Set up a table or matrix to track possible relationships.
  • Fill in definite relationships directly from the clues.
  • Use exclusion and conjunction of clues to eliminate possibilities.
  • Continue deducing until all relationships are determined.
  • Verify the solution against all original clues.

Practice with these types of puzzles helps in competitive exams and improving analytical skills.

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Important Questions from Double Lineup

  1. A, B, C, D, E, F and G are seven coaches. Each one among them is a coach of a different game. The games are Hockey, Cricket, Badminton, Tennis, Volleyball, Basketball and Football (not necessarily in the same order). Each of them trains on one of the seven days of the week from Monday to Sunday (not necessarily in the same order). No two coaches train on the same day of the week. C trains Badminton on Friday. B teaches Volleyball on the previous day of the day on which a coach trains Hockey. G trains on Sunday but does not train Cricket or Tennis. D trains Basketball on the previous day of the day on which F trains. A trains Football on Tuesday. E does not train Tennis. On which day does F train?

  2. P, Q, R, S, T, V and W are seven members of the family. There are three female members. Each of them has a difference profession-­Lawyer, Chartered Accountant (CA), Engineer, Teacher, Doctor, Architect and Pharmacist. No Lady is either a pharmacist or a chartered Accountant. Each of them has a different monthly income. The chartered accountant earns the most. S, the engineer, earns less than V, the doctor. R, the teacher, earns more than P and less than S. W’s wife earns the least. T is an unmarried lady Lawyer and she earns less than P and more than only Q. The pharmacist’s income is not the lowest

    Who earns the least?

  3. Who is the Principal?

    A. Daisy

    B. Andy

    C. Mary

    D. Lily

  4. Navya and Mohan play football and cricket. Lavi and Navya play chess and football. Navya, Anima and Kabir play cricket and badminton. Mohan and Kabir play carrom.

    Who plays the most games?

  5. There are five people A, B, C, D and E at a party, among whom there are two couples. They are employed as a teacher, a doctor, a lawyer, an accountant and an engineer, though not in the same order. The engineer is married to the teacher and C is the unmarried lawyer. D is an accountant. Teacher B is a female whose female friend is the accountant. Find which of the following could be true.

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