Coupon Accepted Successfully!



  • Sample space: The set of all possible outcomes
  • Sample points: Elements of sample space
  • Event: A subset of the sample space
  • Impossible event: The empty set
  • Sure event: The whole sample space
  • Complementary event or 'not event': The set or S - A
  • Event A or B: The set A B
  • Event A and B: The set A B
  • Event A and not B: The set A - B
  • Mutually exclusive event: A and B are mutually exclusive if A B = φ
  • Exhaustive and mutually exclusive events: Events E1, E2, ... En are mutually exclusive and exhaustive if E1 E2 .. En = S and Ei Ej =φ i ≠ j
  • Probability: Number P () associated with sample point such that
    The number P () is called probability of the outcome .
  • Equally likely outcomes: All outcomes with equal probability
  • Probability of an event: For a finite sample space with equally likely outcomes Probability of an event where n(A) = number of elements, in the set A, n(S) = number of elements in the set S.
  • If A and B are any two events, then
  • P(A or B) = P(A) + P(B) - P(A and B)
  • Equivalently, P(A B) = P(A) + P(B) - P(A B)
  • If A and B are mutually exclusive, then P(A or B) = P(A) + P(B)
  • If A is any event, then
    P(not A) = 1 - P(A) 


Test Your Skills Now!
Take a Quiz now
Reviewer Name