Class 9 Exam  >  Class 9 Questions  >  Twenty balls are serially numbered and placed... Start Learning for Free
Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, is
  • a)
    1/20
  • b)
    2/20
  • c)
    3/20
  • d)
    9/20
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Twenty balls are serially numbered and placed in a bag. The probabilit...
Solution:
Given,
Total number of balls= 20
We need to find the probability of drawing a ball which is a multiple of 3 or 5.
Multiples of 3: 3, 6, 9, 12, 15, 18
Multiples of 5: 5, 10, 15, 20

Therefore, there are a total of 9 balls which are multiples of 3 or 5.

Probability= (Number of favourable outcomes)/(Total number of outcomes)
Total number of outcomes= 20 (since there are 20 balls in the bag)

Thus, the probability of drawing a ball which is a multiple of 3 or 5 is:
= 9/20

So, option (D) is the correct answer.

HTML Code:
Solution:

Given,

Total number of balls= 20

We need to find the probability of drawing a ball which is a multiple of 3 or 5.

Multiples of 3: 3, 6, 9, 12, 15, 18

Multiples of 5: 5, 10, 15, 20

Therefore, there are a total of 9 balls which are multiples of 3 or 5.

Probability= (Number of favourable outcomes)/(Total number of outcomes)

Total number of outcomes= 20 (since there are 20 balls in the bag)

Thus, the probability of drawing a ball which is a multiple of 3 or 5 is:

= 9/20

So, option (D) is the correct answer.
Free Test
Community Answer
Twenty balls are serially numbered and placed in a bag. The probabilit...
Total number of balls: 20
Balls with multiples of 3: 6 balls
Balls with multiples of 5: 3 balls

Therefore, Balls with multiples of 3 and 5/ Total number of balls

= 9/20
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
Explore Courses for Class 9 exam

Top Courses for Class 9

Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer?
Question Description
Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer?.
Solutions for Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, isa)1/20b)2/20c)3/20d)9/20Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev