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CBSE Class 12 Math 2020 Delhi Set 1 Solved Paper

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Question : 10
Total: 36
A die is thrown once. Let A be the event that the number obtained is greater than 3. Let B be the event that the number obtained is less than 5 . Then P(A∪B) is
Solution:     👈: Video Solution
P(A)=‌
3
6

P(B)=‌
4
6

and
P(A∩B)=‌
1
6

We know,
P(A∪B)‌=P(A)+P(B)−P(A∩B)
‌=‌
3
6
+‌
4
6
−‌
1
6

‌=‌
6
6
=1
∴ Option (d) is correct.
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