A box contains 12 balls out of which 7 are red and rest are green. In how many ways can a random sample of 8 balls be drawn from the bag so that at the most 3 red balls are included in the sample and no sample has all the 8 balls of the same colour?

Asked by Last Modified  

Follow 1
Answer

Please enter your answer

Tutor

7C3*5C5 =( 7!/3!*(7-3)! ) / 1 = 7*6*5*4! /3!*4! = 7*5 =35
Comments

Working for better future of India

7C3*5C5=35
Comments

Expert Mathematics teacher and tutor

It is not possible for all 8 balls to be of same color. Max 3 red and rest free = (7C3×5C5)!+ Max of 2 red balls=(7C2×5C6) not possible. Ans 7C3×5c5 random samples.
Comments

Mathematica Aim Delta

Check out the attachments
Comments

Path founder

35
Comments

Math Magician

There are total 12 balls out of which 7 are red and 5 are green. This statement itself says the possibility of all 8 to be of same colour is nil. And to have at most 3 red, we require at least 5 green but we have only 5 green, this leave us with only one combination that is with 3 red and 5 green. No....
read more
There are total 12 balls out of which 7 are red and 5 are green. This statement itself says the possibility of all 8 to be of same colour is nil. And to have at most 3 red, we require at least 5 green but we have only 5 green, this leave us with only one combination that is with 3 red and 5 green. No. of samples= (7!/3!4!)*(5!/5!1!) =35 read less
Comments

1 way
Comments

Perfectionist

This question is too trivial. Answer: (7C3)x(5C5)=21. Replace 'atmost' with 'atleast' in the question. Then the solution will be (7C3)x(5C5)+(7C4)x(5C4)+ (7C5)x(5C3)+(7C6)x(5C2)+(7C7)x(5C1).
Comments

Experienced Mathematics com ECE Educator

7C3*5C5= 35*1=35. there are 35 possible ways
Comments

Tutor

7C3*5C5= 35,since 6 balls cannot be choosen form 5 balls and even more hence 35 is correct answer
Comments

View 8 more Answers

Related Questions

The value of i power i is ........?
e^(-pi/2)
Kumar Upendra Akshay
0 1
7
I am an M Phil B Ed in History having a wide experience of teaching at High school and under graduate level. I have proficiency in teaching History, Political science, English and Hindi. How can I get part time tuition assignments?
First you choose urban pro or any online pro and choose coin to meet students online and give theirs answer and now soon I make a web page for teacher like you and others can give tuition online.
Indu
0 0
6
Why density of Ice is lesser than water?
The main reason why the density of ice is lesser than that of water is because of its crystal structure. Four hydrogen atoms tetrahedrally surround each oxygen atom in the ice. Two of the hydrogen atoms...
Bitu
What is meaning of sole trade concern ?
Sole in lay man understanding means one person. Hence a Sole Trading concern is a commercial organisation that is run and managed completely by one single person. He is solely responsible for debt and...
Vidhya Vaibhava Education Institution

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

BRS
BRS refers to Bank reconciliation statement. This is prepared to reconcile the difference between bank account in the cash book and pass book.

How to overcome ORGANIC CHEMISTRY PHOBIA....for XI & XII JEE MAINS/NEET ASPIRANTS...
Students preparaing for NEET and JEE MAINS exam in particular loose marks particularly in simple topics in organic chemistry.One such topic is G.O.C.As G.O.C is a mix up all the basics student should have...

Rule Of Sign
1. Rule of sign solving is known as VBODMAS: V stands for "Vinculum" or "Bar" B stands for "Bracket" (order as small,medium,big) O stands for "Of" D stands for "Divisibility" M stands for "multiplication" A...
M

Mohit S.

1 0
0

Language acquisition is no puberty.
Articulation & the movement of articulators is corollary, not causation. http://www.sbwresearch.com/single-post/2016/08/09/Articulation-the-movement-of-articulators-is-corollary-not-causation ...

Reconstitution Of Partnership Admission Of A Partner Important Questions
Unit 2: Reconstitution of partnership admission of a partner: On what occasions does the need for valuation of goodwill arise? Why is it necessary to revalue assets and liabilities at the time of...

Recommended Articles

Radhe Shyam is a highly skilled accounts and finance trainer with 8 years of experience in teaching. Accounting is challenging for many students and that’s where Radhe Shyam’s expertise comes into play. He helps his students not only in understanding the subject but also advises them on how to overcome the fear of accounts...

Read full article >

Sandhya is a proactive educationalist. She conducts classes for CBSE, PUC, ICSE, I.B. and IGCSE. Having a 6-year experience in teaching, she connects with her students and provides tutoring as per their understanding. She mentors her students personally and strives them to achieve their goals with ease. Being an enthusiastic...

Read full article >

Raghunandan is a passionate teacher with a decade of teaching experience. Being a skilled trainer with extensive knowledge, he provides high-quality BTech, Class 10 and Class 12 tuition classes. His methods of teaching with real-time examples makes difficult topics simple to understand. He explains every concept in-detail...

Read full article >

Mohammad Wazid is a certified professional tutor for class 11 students. He has 6 years of teaching experience which he couples with an energetic attitude and a vision of making any subject easy for the students. Over the years he has developed skills with a capability of understanding the requirements of the students. This...

Read full article >

Looking for Class 12 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you