# The probability an event of a trial is - Mathematics

MCQ

The probability an event of a trial is

• 1

• 0

• less than 1

• more than 1

#### Solution

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 always less than or equal to and n is a positive integers, it can’t be zero. But, is a non negative integer. So, the maximum value of probability of an event is n/n=1, which is the probability of a certain event and the minimum value of it is 0, which is the probability of an impossible event. For any other events the value is in between 0 and 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 3 | Page 16

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