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If AxxB={(a ,1)(b ,3),(a ,3),(b ,1),(a ,...

If `AxxB={(a ,1)(b ,3),(a ,3),(b ,1),(a ,2),(b ,2)},` find `Aa n dBdot`

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To find` B × A` we multiply each element of B with that of A & form an ordered pair.
i.e. ordered pairs are `{(a ,1)(b ,3),(a ,3),(b ,1),(a ,2),(b ,2)}`
Thus` A={a,b} `and `B={1,2,3}`
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RD SHARMA-RELATIONS-Solved Examples And Exercises
  1. Let A={-1,3,5} and B={2,3} find the following products (i) AxxB (ii) ...

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  2. Express A={(a ,b):2a+b=5,a ,b in W} as the set ordered pairs.

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  3. If AxxB={(a ,1)(b ,3),(a ,3),(b ,1),(a ,2),(b ,2)}, find Aa n dBdot

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  4. Let A={1,2,3}and B={x : x in N ,x is prime less than 5}. Find AxxBa...

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  5. If AxxB={(a ,1)(a ,5),(a ,2),(b ,2),(b ,5),(b ,1)}, find BxxAdot

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  6. If A={1,2},B={3,4}a n dC={4,5,6}dotT h e n , AxxB={1,2}xx{3,4}={(1,3)...

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  7. Findxa n dy , if (x+3,5)=(6,2x+y)dot

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  8. If A={a ,b} and B={1,2,3}, find AxxB ,BxxA and (AxxB)nn(BxxA)

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  9. If A={1,2,3},B={4},C={5}, then verify that: Axx(BuuC)=(AxxB)uu(AxxC)

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  10. A relation R is defined from a set A={2,3,4,5} to a set B=3,6,7,10 as ...

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  11. For any sets A ,B ,C ,D prove that: (AxxB)nn(CxxD)=(AnnC)xx(BnnD)

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  12. For any three sets A ,B ,C prove that: A-(B uu C)=(A-B)nn(A-C)

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  13. Theorem 9(A and B are two non empty set having n element in common ; t...

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  14. Let A be a non-empty set such that AxxB=AxxC . Show that B=C .

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  15. Let R be the relation on the set N of natural numbers defined by R={(a...

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  16. If R is the relation "less than" from A={1,2,3,4,5} to B={1,4,5}, writ...

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  17. A relation R is defined on the set Z of integers as: (x ,y) in R x^2...

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  18. For the relation R1 defined on R by the rule (a ,b) in R1:1+ab >...

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  19. Find the values of a\ a n d\ b ,\ if\ (3a-2,\ b+3)=(2a-1,\ 3)dot

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  20. If A={1,3,5}and B={2,3}, find AxxB and BxxA.

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