Friday, 24 June 2016

Probabilty


Probability - The measure of how likely an event are about to happen.
Experiment - A situation involving chances/probability than leads to results called outcome
Outcome/Sample point - The result of a single trial of an experiment
Event/Sample space - All the possible outcome of an experiment

Example Questions

A bag consist of 30 heart candies with numbered sticker from 1 to 30. A candy is drawn at random and its numbered is noted. What is the probability that the candy drawn:-

a) Has an odd number on it?


Answer = 15 numbers : 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27 and 29.


b) Has a number that is divisible by 5?


Answer = 6 numbers : 5, 10, 15, 20, 25 and 30.


c) Has a number that is divisible by 3 and 4?



Answer = 16 numbers : 3, 4, 6, 8, 9, 12, 15, 16, 18, 20, 21, 24, 25, 27, 28 and 30.


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