Example 23 - Chapter 1 Class 11 Sets
Last updated at May 29, 2018 by Teachoo
Transcript
Example 23, If X and Y are two sets such that X ∪ Y has 50 elements, X has 28 elements and Y has 32 elements, how many elements does X ∩ Y have ? n ( X ∪ Y ) = 50, n ( X ) = 28, n ( Y ) = 32, n (X ∩ Y) = ? By using the formula n ( X ∪ Y ) = n ( X ) + n ( Y ) – n ( X ∩ Y ), 50 = 28 + 32 – n ( X ∪ Y ) n ( X ∪ Y ) = 60 – 50 = 10
Examples
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Example 11
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Example 23 You are here
Example 24
Example 25
Example 26
Example 27
Example 28
Example 29
Example 30
Example 31
Example 32
Example 33
Example 34
Chapter 1 Class 11 Sets
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About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.