# Set Theory and Algebra MCQ - Sets

51:

If every element of a group G is its own inverse, then G is

 A. infinite B. finite C. cyclic D. abeian Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:
52:

The universal relation A x A on A is

 A. an equivalence relation B. anti-symmetric C. a partial ordering relation D. not symmetric and not anti-symmetric Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
53:

Total number of diferent partitions of a set having four elements is

 A. 16 B. 8 C. 15 D. 4 Answer Report Discuss Option: C Explanation : Click on Discuss to view users comments. Write your comments here:
54:

A partition of {1, 2, 3, 4, 5} is the family

 A. {(1, 2),(3, 4),(3, 5)} B. {φ(1, 2),(3, 4),(5)} C. {(1, 2, 3),(5)} D. {(1, 2,), (3, 4, 5)} Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:
55:

Let s(w) denote the set of al the letters in w where w is an English word. Let us denote set equality, subset and union relations by =, and respectively.

Which of the following is NOT true?

 A. s(ten) ⊂ s(twenty) B. s(stored) = s(sorted) C. s(sixty) ⊂ (s(six)  ∪ s(twenty) D. None of these Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:

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