Browse by Stream
-
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
Ranking
Products & Resources
-
Study Abroad
Top Countries
Student Visas
-
Arts, Commerce & Sciences
Exams
Colleges
Upcoming Events
Resources
-
Management and Business Administration
Exams
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
Animation Courses
Colleges
Resources
-
Media, Mass Communication and Journalism
Exams
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- Home
- Engineering
- I have a doubt, kindly clarify. There are three papers of 100 marks each in an examination. Then the number of ways a student gets 150 marks such that he gets at least60% in two papers.
There are three papers of 100 marks each in an examination. Then the number of ways a student gets 150 marks such that he gets at least 60% in two papers.
- Option 1)
3C2 x 32C2
- Option 2)
4C3 x 32C2
- Option 3)
4C3 x 36C2
- Option 4)
4C3 x 32C3
Answers (1)
As learnt in
Theorem of Combinations -
The number of combinations of n distinct objects taken r at a time when any object may be repeated any number of times is .
- wherein
Coefficient of in
.
150 marks
Thus,
We get
solutions
and the two papers can be chosen in ways.
Option 1)
3C2 x 32C2
This option is correct.
Option 2)
4C3 x 32C2
This option is incorrect.
Option 3)
4C3 x 36C2
This option is incorrect.
Option 4)
4C3 x 32C3
This option is incorrect.
View full answer
Similar Questions
- 0.27 g of a long chain fatty acid was dissolved in 100 cm3 of hexane. 10 mL of this solution was added dropwise to the surface of water in a
- 0.3 g of acid is neutralised by 40 cm3 .125N NaOH .equvivalent mass of acid is
- 1. A block of mass 10 kg is kept on a rough inclined as shown in figure. The coefficient of friction between the block and the surface is 0
Trending Articles/News
Latest Question
- A sum of money under compound interest doubles itself in 4 years. In how many years will it become 16 times itself? Option: 1 1
- A certain loan amounts, under compound interest, compounded annually earns an interest of Rs.1980 in the second year and Rs.2178 in the third year. How much interest did it earn in the first year?
