## RD Sharma Class 10 Solutions Chapter 13: Probability

Summary:

• We find the probability of the occurrence of an event by actually performing the experiment a number of times and adequate recording of the happening of event.
• An Outcome of a random experiment is called an elementary event.
• Probability of an event E, written as P(E), is defined as $P(E)=\frac { Number\quad of\quad outcomes\quad favourable\quad to\quad E }{ Number\quad of\quad all\quad possible\quad outcomes\quad of\quad the\quad experiment }$
• An event associated to random experiment is a compound event if it is obtained by combining two or more elementary events associated to the random experiment.
• An event having only one outcome is called an elementary event. The sum of the probabilities of all the elementary events of an experiment is 1.
• The probability of a sure event (or certain event) is 1.
• The probability of an impossible event is 0
• The probability of an event E is a number P(E) such that $0\le P(E)\le 1$
• For any event E, $P(E)+P(\overline { E } )=1$, where $\overline { E }$ stands for â€˜not E’. E and $\overline { E }$ are called complementary events.

RD Sharma Class 10 Solutions Probability Exercise 13.1

RD Sharma Class 10 Solutions Exercise 13.2

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