there are major topics and sub topics in class 11th maths chapter 16:

• Introduction (16.1)
• Random Experiments (16.2)
  • Outcomes and Sample Space (16.2.1)
• Event (16.3)
  • Occurrence of an Event (16.3.1)
  • Types of Events (16.3.2)
  • Algebra of Events (16.3.3)
  • Mutually Exclusive Events (16.3.4)
  • Exhaustive Events (16.3.5)
• Axiomatic Approach to Probability (16.4)
  • Probability of an Event (16.4.1)
  • Probabilities of Equally Likely Outcomes (16.4.2)
  • Probability of the Event 'A or B' (16.4.3)
  • Probability of Event 'Not A' (16.4.4)