The document explains the concept of the occurrence of an event using the example of throwing a die, where an event is defined by the outcomes less than 4. It specifies that the event occurs if the outcome is included in the defined event set, while it does not occur if the outcome is outside that set. The author, Dhruv Sethi, offers contact details for tutoring services.

1. Maths topic for
Probability:
occurrence of an
event
By Dhruv Sethi;
dhrsethi1@gmail.com/+91 9310805977
11th Grade

2. occurrence of an event
• Consider the experiment of throwing a die. Let E denotes the event “a
number less than 4 appears”.
• Hence the sample space S of the experiment is : S = { 1, 2, 3 }
• If actually ‘1’ had appeared on the die then we say that event E has
occurred. As a matter of fact if outcomes are 2 or 3, we say that event E
has occurred
• Thus, the event E of a sample space S is said to have occurred if the
outcome ω of the experiment is such that ω ∈ E.
• If the outcome ω is such that ω ∉ E, we say that the event E has not
occurred.

3. occurrence of an event
• You can contact me for private or group tuitions from the details below
• By Dhruv Sethi: +91 9310805977/dhrsethi1@gmail.com
• Whatsapp: +91 8291687783