Definition of Probability


 
 
Concept Explanation
 

Definition of Probability

Probability: It predicts the chance of occuring an event.The value lies between 0 and 1. If an event is sure to happen then the probability will be 1 and if an event is impossible to happen then the the probabity of occurance is 0..

small Probability = frac{No ;of; favourable; Outcomes}{Total; number; of; events}

Example 1: We have balls number 10 to 18. What is the probability of picking an even numbered ball.

Sol: Total number of possible outcomes= 9 as there are 9 balls.

Total Number of favourable cases = 10,12,14,16,18 Numberd ball is picked. Therefore the number of favourable  cases is 5

dpi{120} small P(Even; Numbered; ball) = frac{5}{9}

Sample Questions
(More Questions for each concept available in Login)
Question : 1

Write the probability of an impossible event:

Right Option : A
View Explanation
Explanation
Question : 2

The probability of an event is a number between 0 and 1, where, 0 indicates the __________________

Right Option : B
View Explanation
Explanation
Question : 3

An experiment was done 300 times in a day. 100 outcomes from the experiment were unfavourable, the probability that the next outcome is unfavourable will be ______________.

Right Option : D
View Explanation
Explanation
 
 
 
Related Videos
Language - English
Language - English

Language - English
Language - English


Students / Parents Reviews [20]