Combination of Events
Combination of Events
COMBINATION OF EVENTS:
Mutually Exclusive Events:
If two events cannot occur simultaneously then they are mutually exclusive. If A and B are mutually exclusive events, then
Ex. In drawing a card from a well shuffled pack of 52 cards, consider he following events:
A = the card is a spade, and B= the card is a heart
The two events A and B are mutually exclusive.
Following two events are not mutually exclusive.
(a) The card is a heart (b) The card is a king
Because the card can be king of heart.
Addition Theorem of Probability:
(i) If A and B are two events associated with a random experiment, then
IF A and B are mutually exclusive events then
(ii) If A, B, C are three events associated with a random experiment, then
Example: A bag contains 6 white, 5 black and 4 red balls. FInd the probability of getting either a white or a black ball in a single draw.
Solution: Let A = Event that we get a black ball
Two events A and B are mutually exclusive.
So,
A dice is rolled and a card is picked from a well shuffled deck of cards. What is the probability of getting an Ace and an even number ? | |||
| Right Option : C | |||
| View Explanation | |||
A card is drawn from a well - shuffled pack of cards and it turns out to be a red card . what is the probability of getting a red card , if we pull out one more card at random | |||
| Right Option : B | |||
| View Explanation | |||
A dice is rolled and a coin is tossed. What is the probability of getting a tail and an even number ? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
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Shivam Rana
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Eshan Arora
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
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Barkha Arora
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
