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Question -

Two dice are thrown. The events A, B and C are as follows:
A: getting an even number on the first die.
B: getting an odd number on the first die.
C: getting the sum of the numbers on the dice ≤ 5
State true or false: (give reason for your answer)
(i) A and B are mutually exclusive
(ii) A and B are mutually exclusive and exhaustive
(iii)  
(iv) A and C are mutually exclusive
(v) A and  are mutually exclusive
(vi)  are mutually exclusive and exhaustive.



Answer -


(i) It is observed that A ∩ B = Φ
∴ A and B are mutually exclusive.
Thus, the given statement is true.
(ii) It is observed that A ∩ B = Φ and A ∪ B = S
∴ A and B are mutually exclusive and exhaustive.
Thus, the given statement is true.
(iii) It is observed that

Thus, the given statement istrue.

(iv) Itis observed that A ∩ C = {(2, 1), (2, 2), (2, 3), (4, 1)} ≠Φ

A and C are not mutually exclusive.

Thus, thegiven statement is false.

(v) 

A and are not mutually exclusive.

Thus, thegiven statement is false.

(vi) Itis observed that ;

However, 

Therefore, events are not mutually exclusive andexhaustive.

Thus, thegiven statement is false.

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