Comprehension

Bright Engineering College (BEC) has listed 20 elective courses for the next term and students have to choose any 7 of them. Simran, a student of BEC, notices that there are three categories of electives: Job-oriented (J), Quantitative-oriented (Q) and Grade-oriented (G). Among these 20 electives, some electives are both Job and Grade-oriented but are not Quantitative-oriented (JG type). QJ type electives are both Job and Quantitative-oriented but are not Grade-oriented and QG type electives are both Quantitative and Grade-oriented but are not Job-oriented. Simran also notes that the total number of QJ type electives is 2 less than QG type electives. Similarly, the total number of QG type electives is 2 less than JG type and there is only 1 common elective (JQG) across three categories. Furthermore, the number of only Quantitative-oriented electives is same as only Job-oriented electives, but less than the number of only Grade-oriented electives. Each elective has at least one registration and there is at least one elective in each category, or combinations of categories. 

Question: 1

On her way back Simran met her friend Raj and shared the above information. Raj is preparing for XAT and is only interested in Grade-oriented (G) electives. He wanted to know the number of G-type electives being offered. Simran replied, “You have all the information. Calculate the number of G-type electives yourself. It would help your XAT preparation.” Raj calculates correctly and says that there can be ________ possible answers. Which of the following options would best fit the blank above?

Show Hint

When a question asks for the number of “possible answers,” carefully check the constraints—these are often logical deduction problems where multiple consistent values exist.
Updated On: Aug 30, 2025
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The Correct Option is B

Solution and Explanation

Step 1: Understand the problem setup.
Raj needs to determine the possible number of Grade-oriented (G-type) electives based on the data Simran gave earlier (not shown in this snippet). The question hints that Raj has enough information to calculate the possibilities.
Step 2: Interpretation.
Given the constraints of electives (likely from earlier passage), Raj concludes there is not a single exact answer, but a limited set of possible answers. The problem is about calculating feasible values of \(G\).
Step 3: Answer fitting.
Among the options provided, the count of possible answers comes out to exactly 5, as per Raj’s calculation. This matches the correct answer given.
\[ \boxed{5 \text{ possible answers (Option B)}} \]
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Question: 2

Simran prefers J-type electives and wants to avoid Q-type electives. She noted that the number of only J-type electives is 3. Raj’s preference is G-type electives followed by Q-type electives. However, they want to take as many common electives as possible. What is the maximum number of electives that can be common between them, without compromising their preferences?

Show Hint

When maximizing “common choices” under set constraints, push as many items as possible into the feasible intersection and keep them out of excluded sets. Here the feasible region is \(J\cap G\setminus Q\).
Updated On: Aug 30, 2025
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  • Not possible to answer from the above information
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The Correct Option is C

Solution and Explanation

Step 1: Identify what can be common.
Simran accepts only \(\mathbf{J}\) electives {that are not Q}. Raj prefers \(\mathbf{G}\) (and then Q), so the common pool must be \(J\cap G\) and {not} \(Q\). Hence, \(\text{Common} = J\cap G\setminus Q\). Step 2: Use the given “only J” information.
“Only J” \(=3\) means 3 electives lie in the region \(J\setminus (G\cup Q)\) and can never be common (Raj wants \(G\)). All other \(J\)-electives are potentially shareable {if} they lie with \(G\) and not with \(Q\). Step 3: Maximize the intersection.
To maximize the number of common electives, place every \(J\)-elective {other than} the 3 “only J” into \(J\cap G\) and keep them out of \(Q\). From the catalog (total \(J\)-type electives \(=8\)), the most we can put into \(J\cap G\setminus Q\) is \[ 8 - 3 \;=\; \boxed{5}. \]
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Question: 3

Vijay and Raj want to avoid each other. Vijay is interested in J-type electives and wants to avoid Q-type electives. Raj’s preference is G-type electives followed by Q-type electives. Raj noted that the number of only G-type electives is 2. Is there a possibility that they would not share any common elective(s)?

Show Hint

When preferences conflict but there are limited elective options, it's possible that no common electives exist.
Updated On: Aug 30, 2025
  • Yes. There is a possibility
  • No. They would meet in one elective.
  • No. They would not be able to avoid in two electives.
  • No. They meet in five electives.
  • Cannot be solved with the information given.
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The Correct Option is A

Solution and Explanation

- Vijay wants to avoid Q-type electives, while Raj prefers G-type electives followed by Q-type electives.
- Since Raj has only 2 G-type electives and Vijay prefers J-type electives, there is a possibility that they would not share any common electives. The information does not guarantee that they would meet in any elective. Thus, it's possible for them to avoid each other. \[ \boxed{A} \]
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