Class 9 Exam  >  Class 9 Questions  >  A number is selected at random from first 20 ... Start Learning for Free
A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-
  • a)
    3/10
  • b)
    3/18
  • c)
    5/18
  • d)
    4/18
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A number is selected at random from first 20 numbers then probability ...
Solution:
Given, a number is selected at random from first 20 numbers.
Let's find out the total number of possible outcomes.

Total number of outcomes:
The total number of possible outcomes is 20.

Favourable outcomes:
The multiples of 3 from 1 to 20 are 3, 6, 9, 12, 15 and 18.
Therefore, the number of favourable outcomes is 6.

Probability:
The probability of selecting a multiple of 3 is given by the ratio of the number of favourable outcomes to the total number of possible outcomes.
Therefore, P(multiple of 3) = favourable outcomes / total outcomes
P(multiple of 3) = 6/20
P(multiple of 3) = 3/10

Hence, the correct option is (a) 3/10.
Free Test
Community Answer
A number is selected at random from first 20 numbers then probability ...
The total number multiple of 3 till 20 is 6 so probability..
is 6/20 = 3/10
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

A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer?
Question Description
A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. 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 A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. 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 A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer?.
Solutions for A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. 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 A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer?, a detailed solution for A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A number is selected at random from first 20 numbers then probability that number is a multiple of 3 is :-a)3/10b)3/18c)5/18d)4/18Correct answer is option 'A'. 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