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Write the Probability of a Sure Event - Mathematics

Sum

Write the probability of a sure event

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Solution

The probability of a sure event is 1i.e.p(s)=1 where `s` is the sure event . 

Proof: In a sure event n(E) = n(s)

[Since number of elements in Event 'E' will be equal to the number of element in sample-space.] 

By definitions of probability: 

P(s)=n(E)/n(s)=1 

p(s)=1 

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APPEARS IN

Selina Concise Maths Class 10 ICSE
Chapter 25 Probability
Exercise 25 (A) | Q 9.1 | Page 386
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