UrbanPro

Take Quantitative Aptitude from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

Asked by Last Modified  

Follow 0
Answer

Please enter your answer

((5!*5!)/(3!*7!))=10/21=0.476190
Comments

Best Institute For Competitive Exams

10/21
Comments

Deepak 2C2/7C2 = 1/21 ? Probability=Possible out come / Total out come. 5C2/7C2 = 10/21 5C2 -> 7C2 ->
Comments

Tutor

5/7
Comments

The Complete Cover

1-(10/21)=11/21
Comments

Trainer

Solution: Total Number of balls = 2+2+3= 7 Number of ways of drawing 2 balls out of 7 = 7C2 Total Number of balls other than Blue = 2 red + 3 green = 5 Number of ways of drawing 2 balls( other than blue) out of 7 = 7C2 Probability of drawing balls other than blue = 5C2/7C2 =10/21
Comments

10/21
Comments

Trainer

Total balls is 7. Number of ways of drawing 2 out of this 7 is 21. Event of drawing 2 balls, none of which is blue is 10. Therefore, answer is 10/21
Comments

Come and Join us in exploring your Abilities and Intelligence with advancing Team work, Innovation and Synergy

5/7 * 2/3
Comments

((5!*5!)/(3!*7!))=10/21=0.476190
Comments

View 19 more Answers

Related Questions

How to learn for aptitude tests?
Hi akshata Aptitude is only one subject that knows every one but here u should worry about time saving and it will depend upon how u attempt the questions,are u going un right direction or not,this all...
Akshata
0 0
6
What are the Best Books for preparing to IAS Preliminary?
start with ncert 6th class and complete upto 10th
Chetan
What are the prime numbers ?
A number greater than 1 which is divisible by itself and 1. Example 3, 5, 7, 11 etc.
Pavnesh Sharma

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

Ask a Question

Related Lessons

Average and Alligation
Averages Basic Formulae for average of n numbers x1, x2, x3....xn is given by An=(x1+x2+x3+.........xn)/n=Total of n numbers/n This also means that (An)*n =Total of the numbers Average of sum of first...
A

Advays Classes

0 0
0

CONCEPTUAL CLARITY
WHILE STUDYING ANY TOPIC MAKE SURE THAT AVOID MULTIPLE SOURCES. INSTEAD PICK UP ONE STANDARD SOURCE AND THE CONTENT OF WHICH YOU CAN COMPREHEND. READ IT MULTIPLE TIMES...FRAME A PICTURE IN MIND....ANALYSE...

Fast Calculations In Mathematics: (Multiplication Module 1: Part a - Multiplication By 11)
Multiplication Of Any Two-Digit Number (Let Say Ab) By 11: A) WHEN (A+B) IS BETWEEN 0 TO 9: A (A+B) B EXAMPLES: 1) 11 X 42 = 4 ( 4+ 2) 2 = 462 ...

Ch 1- Mutliplication short tricks by Ashish Vastri..
1. HOW TO MUTLIPLY 2 digit number by 11? Example 1. 35 * 11 = 385 Step 1. Add both digits of the two digit number. 3+5 = 8. Step 2. Place the result in between both the digits. 3_8_5...

Shortcuts For Aptitude : (Topic - Average)
Important Things To Remember: Replacement case: Weight of new person = Weight of outgoing person + No of person (inc in average) Weight of new person = Weight of outgoing person - No of person...

Recommended Articles

There are a number of exciting upcoming government jobs in India for you. Just check out the links and apply for relevant jobs. Open Positions: Position Name Dept./Org. Vacancies Last Date Info. Link LDC, Steno, Driver, MTS, Ayah, Cook IAF 140 30-03-2015 http://bit.ly/1C1zjAM Technician,...

Read full article >

When exams knock at the door, it is common to go paranoid. First, the constant worry on how you will perform and whether you are preparing right is a major concern. Next, the limited time span and the vast syllabus that you have to complete. Irrespective of the kind of exam you are appearing for, stress is common and happens. If...

Read full article >

Students Preparing for Exams are always bogged by Revision to be completed and how much to Revise. I had found these Revision Techniques to be profound in actual getting good exams scores during my school days. Let us see what effective Revision Techniques can be used to improve Learning 1) If Time is King, an...

Read full article >

Bank P.O is one of the most talked about examination for bank recruitment in India. P.O stands for Probationary Officer which is an entry level position in banks, which are especially for fresh graduates or a person without any prior experience. The probation period for Bank P.Os is generally 2 years in which they’re trained...

Read full article >

Looking for Quantitative Aptitude Coaching?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Quantitative Aptitude Classes?

The best tutors for Quantitative Aptitude Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Quantitative Aptitude with the Best Tutors

The best Tutors for Quantitative Aptitude Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more