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Sets Practice Test 1
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© examsnet.com
Question : 26
Total: 33
In a group, 100 people participate in Ludo,40 participate in Carom and 20 participatein both Ludo and Carom. The number ofpeople participating in at least one of the twogames is:
80
120
20
90
None of these
Validate
Solution:
👈: Video Solution
Let L be the set of people who participate in Ludo and C be the set of people who participate in Carom.
∴ n(L) = 100, n(C) = 40, n(L ∩ C) = 20
We have to find n(L ∪ C)
Using n(L ∩ C) = n(L) + n(C) - n(L ∩ C)
⇒ n(L ∪ C) = 100 + 40 - 20 = 120
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