CBSE Class 10 Maths Chapter 15 Revision Notes Probability

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CBSE Revision Notes Class 10 Maths Chapter 15 Probability


CBSE Revision Notes Class 10 Maths Chapter 15 are provided to help the students understand and revise the concepts right from the beginning. The concepts taught in Class 10 are important to be understood as these concepts are the stepping stones for the upcoming syllabus. To score good marks in the Class 10 mathematics examination, it is advised to solve questions provided in the Revision Notes Class 10 Maths Chapter 15. These revision notes for Class 10 Maths help the students to revise all the concepts in a better way.

Swiflearn provides Revision Notes and keynotes chapter wise for the CBSE board exam in an easy-to-understand, free downloadable PDF format so students can use it for their studies and score better in their board exams. The CBSE Class 10 Revision Notes are made for the main subjects of Science and Maths. These core subjects are very critical as they are the stepping stones and play a crucial role in a student’s future. They might be tricky for students. The CBSE Class 10 Revision Notes for each chapter will enable them to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams.

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CBSE Class 10 Maths Revision Notes are designed keeping in mind the exam pattern and syllabus of NCERT 2020-21. Students can download the PDF for free and practice the questions to score well in the coming exams.

CBSE Revision Notes Class 10 Maths Chapter 15 Probability


Probability: –

It is the numerical measurement of the degree of certainty.

Theoretical probability associated with an event ‘E’ is defined as “ If there are n
elementary events associated with a random experiment and m of these are favourable to the event E then the probability of occurrence of an event is defined by P(E) as the ratio m/n.

P(E) = number of favourable outcomes to E / number of all possible outcomes of the experiments.

Thus, P(E) = m/n

  • If P(E) =1 , then it is called ‘Certain Event’
  • If P(E) = 0 then it is called impossible event
  • The probability of an event E is a number P(E) such that 0 ≤?(?)≤1
  • 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.
  • For any event E, P(E) + P(?) =1 , where ? stands for not E and ? are called
    complementary events.


Probability 2

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