Class 10 Exam > Class 10 Questions > A box contains 90 discs which are numbered fr...
Start Learning for Free
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5?
Most Upvoted Answer
A box contains 90 discs which are numbered from 1 to 90. If one disc i...
1. Perfect squares b/w 1 to 90= 4, 9, 16, 25, 36, 49, 64, 81
i.e. no. of perfect squares (favourable outcomes)= 8
Therefore, probability (getting a perfect square)= 8/90 = 4/45
2. No.s divisible by 5 b/w 1 to 90= 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90
i.e. favourable outcomes= 18
Therefore, probability (getting a no. divisible by 5)= 18/90 = 1/5
i.e. no. of perfect squares (favourable outcomes)= 8
Therefore, probability (getting a perfect square)= 8/90 = 4/45
2. No.s divisible by 5 b/w 1 to 90= 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90
i.e. favourable outcomes= 18
Therefore, probability (getting a no. divisible by 5)= 18/90 = 1/5
Community Answer
A box contains 90 discs which are numbered from 1 to 90. If one disc i...
Probability of drawing a disc with:
a) Two-digit number is a perfect square number:
- There are 9 perfect square numbers between 1 to 90, which are 1, 4, 9, 16, 25, 36, 49, 64, and 81.
- The total number of two-digit numbers between 1 to 90 is 90 - 9 = 81 (as we exclude single-digit numbers).
- Therefore, the probability of drawing a disc with a two-digit number that is a perfect square number is 9/81 = 1/9.
b) A number divisible by 5:
- There are 18 numbers between 1 to 90 that are divisible by 5 (5, 10, 15, ..., 85, 90).
- The total number of discs in the box is 90.
- Therefore, the probability of drawing a disc with a number divisible by 5 is 18/90 = 1/5.
Explanation:
- To find the probability of an event, we divide the number of favorable outcomes by the total number of outcomes.
- In this case, the favorable outcomes are the discs with numbers that satisfy the given conditions, and the total outcomes are the total number of discs in the box.
- By calculating the probabilities for each condition, we can determine the likelihood of drawing a disc with a specific number.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Top Courses for Class 10View all
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5?
Question Description
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5?.
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5?.
Solutions for A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? defined & explained in the simplest way possible. Besides giving the explanation of
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5?, a detailed solution for A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? has been provided alongside types of A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? theory, EduRev gives you an
ample number of questions to practice A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears 1. a two -digit number is a perfect square number2. a number divisible by 5? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup