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Consider events A, B, C, D, E o f the sample space S = { n : n is an integer such th a t 10 ≤ n ≤ 20} given by :
A is the set of all even numbers.
B is the set of all prime numbers.
C=(15).
D is the set of all integers ≤ 16
E is the set of all double digit numbers expressible as a power of 2.
A, Band D are
  • a)
    Mutually exclusive events but not exhaustive events
  • b)
    Exhaustive events but not mutually exclusive events
  • c)
    Mutually exclusive and exhaustive events
  • d)
    Elementary events
Correct answer is option 'B'. Can you explain this answer?
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Consider events A, B, C, D, E o f the sample space S = { n : n is an i...
A, B and D are exhaustive events but not mutually exclusive events.
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Consider events A, B, C, D, E o f the sample space S = { n : n is an i...
Exhaustive Events but not Mutually Exclusive Events:
  • A is the set of all even numbers: This set includes integers such as 10, 12, 14, 16, and 20 from the sample space.
  • B is the set of all prime numbers: This set includes integers such as 11, 13, 17, and 19 from the sample space.
  • C = {15}: This set contains only the integer 15 from the sample space.
  • D is the set of all integers ≤ 16: This set includes integers such as 10, 11, 12, 13, 14, 15, and 16 from the sample space.


Since the events A, B, C, and D together cover all the integers in the sample space S (10 to 20) without any overlap, they are considered exhaustive events. However, A and B are not mutually exclusive because there are integers in the sample space that belong to both A (even numbers) and B (prime numbers), such as 10. Therefore, the correct classification for events A, B, C, and D is that they are exhaustive events but not mutually exclusive events.
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Consider events A, B, C, D, E o f the sample space S = { n : n is an integer such th a t 10 ≤ n ≤ 20} given by :A is the set of all even numbers.B is the set of all prime numbers.C=(15).D is the set of all integers ≤ 16E is the set of all double digit numbers expressible as a power of 2.A, Band D area)Mutually exclusive events but not exhaustive eventsb)Exhaustive events but not mutually exclusive eventsc)Mutually exclusive and exhaustive eventsd)Elementary eventsCorrect answer is option 'B'. Can you explain this answer?
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