-
Engineering and Architecture
Exams
Colleges
Predictors
Resources
-
Computer Application and IT
Quick Links
Colleges
-
Pharmacy
Colleges
Resources
-
Hospitality and Tourism
Colleges
Resources
Diploma Colleges
-
Competition
Other Exams
Resources
-
School
Exams
Top Schools
Products & Resources
-
Study Abroad
Top Countries
Student Visas
-
Arts, Commerce & Sciences
Exams
Colleges
Upcoming Events
Resources
-
Management and Business Administration
Colleges & Courses
Predictors
-
Learn
Online Courses
Engineering Preparation
Medical Preparation
-
Online Courses and Certifications
Top Streams
Specializations
- Digital Marketing Certification Courses
- Cyber Security Certification Courses
- Artificial Intelligence Certification Courses
- Business Analytics Certification Courses
- Data Science Certification Courses
- Cloud Computing Certification Courses
- Machine Learning Certification Courses
- View All Certification Courses
Resources
-
Medicine and Allied Sciences
Colleges
Predictors
Resources
-
Law
Resources
Colleges
-
Animation and Design
Predictors & Articles
Colleges
Resources
-
Media, Mass Communication and Journalism
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- Home
- Engineering
- In a group of 9 students, how many different ways can you select a team of 2 students to participate in a quiz if at least 1 of them must be from a specific grade?
In a group of 9 students, how many different ways can you select a team of 2 students to participate in a quiz if at least 1 of them must be from a specific grade?
6
8
9
1
Answers (1)
To solve this problem, we'll consider two cases: when exactly 1 student is chosen from the specific grade and when both students are chosen from the specific grade.
Case 1: Exactly 1 student from the specific grade is chosen.
In this case, we need to select the remaining 1 student from the remaining students (excluding the 1 from the specific grade).
Number of ways to select 1 student from
Case 2: Both students are chosen from the specific grade.
There is only 1 way to select both students from the specific grade.
To calculate the total number of ways to form the team, we need to sum up the possibilities from both cases:
Total number of ways = Number of ways in Case 1 + Number of ways in Case 2
Now, let's calculate the value:
Therefore, there are 9 different ways to select a team of 2 students to participate in the quiz, where at least 1 of them must be from a specific grade.
Hence option 3 is correct.
JEE Main high-scoring chapters and topics
Study 40% syllabus and score up to 100% marks in JEE
