Refer to Example 5, Section 14.4, Chapter 14. Find the probability that a student of the class was born in August.
To do:
We have to find the probability that a student of the class was born in August.
Solution:
![](/assets/questions/media/153848-64722-1660924916.png)
Total number of students in the class $= 40$
Number of students born in August $= 6$
We know that,
Probability of an event=$ \frac{\text{ Number of favourable outcomes }}{\text { Total number of outcomes }}$
The probability that a student of the class was born in August $= \frac{6}{40}$
$= \frac{3}{20}$
The probability that a student of the class was born in August is $ \frac{3}{20}$.
Related Articles
- Refer to Table 14.7, Chapter \( 14 . \)(i) Find the probability that a student obtained less than \( 20 \% \) in the mathematics test.(ii) Find the probability that a student obtained marks 60 or above.
- In a school, students thought of planting trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be the same as the class, in which they are studying, eg. a section of Class I will plant 1 tree, a section of Class II will plant 2 trees and so on till Class XII. There are three sections of each class. How many trees will be planted by the students?
- Section 14 of Hindu Marriage Act, 1955
- There are six sections of Class VI in a school and there are 45 students in each section monthly charges from each student be Rs1650 find the total monthly collection Class VI.
- A dice is rolled twice. Find the probability that 5 will not come up either time.
- A dice is rolled twice. Find the probability that 5 will come up exactly one time.
- A student draws a distance-time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph?$(a)$. the scooter has uniform speed in this section$(b)$. the distance traveled by scooter is the maximum in this section$(c)$. the distance traveled by scooter is the minimum in this section$(d)$. the distance traveled by scooter is zero in this section
- In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group \( \mathrm{AB} \).
- In a simultaneous throw of a pair of dice, find the probability of getting 5 as the sum.
- In a school, students decided to plant trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be double of the class in which they are studying. If there are 1 to 12 classes in the school and each class has two sections, find how many trees were planted by the students.
- Find the probability that a number selected at random from the numbers \( 1,2,3, \ldots, 35 \) is a multiple of 3 or 5.
- The blood groups of 30 students of class IX are recorded as follows:A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O,A student is selected at random from the class from blood donation. Find the probability that the blood group of the student chosen is A.
- A die is thrown. Find the probability of getting a number greater than \(5\).
Kickstart Your Career
Get certified by completing the course
Get Started