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If A = {1, 2, 3, 4} then the number of e...

If A = {1, 2, 3, 4} then the number of elements in `A xx A` is

A

4

B

8

C

12

D

16

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The correct Answer is:
D
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HIMALAYA PUBLICATION-SETS,RELATIONS AND FUNCTIONS-QUESTION BANK
  1. Let A ={1, 2}, B = {3, 4} and C = {4, 5}. Then (A-B) xx (B-C) is

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  2. If A = {1, 2, 3}, B= {3,8}, then (AuuB)xx(AnnB) is

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  3. If A = {1, 2, 3, 4} then the number of elements in A xx A is

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  4. Let A = {1, 2, 3, 4}, B= {2, 3, 4, 5}, then n[(A xx B)nn(B xx A)] is

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  5. If A = {2, 4} and B= {3, 4, 5}, then (A nn B) xx (B uu A)]

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  6. If A = {x:x^2-5x+6=0}, B = {2, 4}, C = {4, 5}, then Axx(B nn C) =

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  7. If aN = {an : n in N} and bn nn cN = dN where a, b, c, d in N and b...

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  8. Let N underseta = (an : n in N), then N underset6 in N underset8 is ...

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  9. Sets A and B have 3 and 6 elements respectively. What can be the minim...

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  10. If A and B are two finite sets such that A nn B != phi, then n (A uu...

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  11. If A and B are finite sets and A sub B then

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  12. If A and B are any two finite sets then n (A) + n (B) is equal to

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  13. In a group of 75 persons every one takes either tea or coffee. If ...

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  14. Two finite sets A and B have m and n elements. Number of subsets of A ...

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  15. If A and B are two sets such that n (A) = 70 , n (B) = 60 and n (A uu ...

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  16. Let n(U) = 700 , n (A) = 200 , n (B) = 300 and n (A nn B) =100, then n...

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  17. R be the relation on the set N of natural numbers, defined by xRy if a...

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  18. Let A = ( a, b, c) and R = {(a, a), (b, b), (a, b), (b, a), (b, c)} b...

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  19. Let X ={1, 2, 3} and R = {(1, 1), (2, 2), (3, 3), (2, 3)} be a relatio...

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  20. Let A = {2, 4, 6, 8} and define R = {(2, 4), (4, 2), (4, 6), (6, 4)} t...

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