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Sets Practice Test 1
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© examsnet.com
Question : 31
Total: 33
If M and N are two sets such that M has 15 elements and N has 18 elements and M ∩ N has 10 elements, then the number of elements in M ∩ N are:
23
13
26
22
None of these
Validate
Solution:
👈: Video Solution
Here n(M) = 15, n(N) = 18 and n(M ∩ N) = 10.
Using n(M ∪ N) = n(M) + n(N) - n(M ∩ N)
n(M ∪ N) = 15 + 18 - 10 = 33 - 10
n(M ∪ N) = 23
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