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Last updated at Jan. 28, 2020 by Teachoo

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Misc 19 Number of binary operations on the set {a, b} are 10 (B) 16 (C) 20 (D) 8 A binary operation * on {a, b} is * : {a, b} × {a, b} → {a, b} {a, b} × {a, b} = {(a, a), (a, b), (b, a), (b, b)} So, * : {(a, a), (a, b), (b, a), (b, b)} → {a, b} We can define * as a * a = a , a * b = a , b * a = a & b * b = a We denote it as Similarly, there can be other combinations. we see all of them Combinations Total combinations = 16 By formula, Total combinations = 22 × Number of element of set = 22 × 2 = 24 = 16 Hence, B is the correct answer

Miscellaneous

Misc 1
Not in Syllabus - CBSE Exams 2021

Misc 2 Not in Syllabus - CBSE Exams 2021

Misc 3 Important Not in Syllabus - CBSE Exams 2021

Misc. 4 Important

Misc 5

Misc 6 Not in Syllabus - CBSE Exams 2021

Misc 7 Not in Syllabus - CBSE Exams 2021

Misc. 8 Important

Misc 9 Important Not in Syllabus - CBSE Exams 2021

Misc 10 Important

Misc 11 Important Not in Syllabus - CBSE Exams 2021

Misc 12 Not in Syllabus - CBSE Exams 2021

Misc 13 Important Not in Syllabus - CBSE Exams 2021

Misc 14 Important Not in Syllabus - CBSE Exams 2021

Misc 15

Misc 16 Important

Misc 17 Important

Misc 18

Misc, 19 Important Not in Syllabus - CBSE Exams 2021 You are here

Chapter 1 Class 12 Relation and Functions

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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 9 years. He provides courses for Maths and Science at Teachoo.