# The Probability of a Certain Event Isthe Probability of a Certain Event is - Mathematics

MCQ

The probability of a certain event is

#### Options

• 0

• 1

• greater than 1

• less than 0

#### Solution

We have to find the probability of a certain event.

Note that the number of occurrence of an impossible event is same as the total number of trials. When we repeat the experiment, every times it occurs. This is the reason that’s why it is called certain event.

Remember the empirical or experimental or observed frequency approach to probability.

If n be the total number of trials of an experiment and A is an event associated to it such that A happens in m-trials. Then the empirical probability of happening of event is denoted by P (A) and is given by

P (A) = m/n

Note that is a positive integer, it can’t be zero. So, the probability of an impossible event is  n/n=1.

Concept: Probability - an Experimental Approach
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#### APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 25 Probability
Exercise 25.3 | Q 2 | Page 16

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