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A={a,b,c} and B={1,2,3} are two sets R={...

A={a,b,c} and B={1,2,3} are two sets R={(a,1),(a,2),(b,2),(b,3),(c,1)} be a subset of `AxxB` then R is a

A

mapping

B

relation

C

mapping and relation

D

none of these

Text Solution

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The correct Answer is:
B
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PATHFINDER-SETS AND RELATIONS-QUESTION BANK
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  2. If p={(x,y) in A X A:x=sqrty} be a relation on a set A={x in N :2lexle...

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  3. A={a,b,c} and B={1,2,3} are two sets R={(a,1),(a,2),(b,2),(b,3),(c,1)}...

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  4. A mapping f is defined :f:(x,y)rarr (x+y,x-y) then f(-1,-2) is equal t...

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  5. Which of the following is a mapping from A to B where A={1,2,3} and B=...

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  6. If A= {x:0ltxlt4} and B={x:3lexle6} where x is an integer then A cap B...

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  7. State which of the following is true

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  8. If S={0,1,4,5,7}then the number of subsets of S is

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  9. If R={(1,-1),(2,0),(3,1),(5,3)} is a relation then R^(-1) is

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  10. If S={1,2,3,4,….10} be a universal set and A={1,2,5} and B={6,7} then ...

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  11. If aN={ax:x in N(natural number)} then 3N cap 7N is equal to

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  12. Set A={a,b,c,d} then the number of defined relation in A is

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  13. If for two sets A and B,A-B=A then which of the following is true?

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  14. The set of all positive odd numbers divisible by 2 is

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  15. If A and B are two finite sets and n(A)=5,n(B)=6 then the minimum numb...

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  16. If A={(x,y):x^2+y^2=25} and B={(x,y):x^2+9y^2=144} then n(Acap B) is

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  17. A={(x,y) in R^2 : x ne0 and y=(1/x)} and B={(x,y) in R^2:y=-x} then A ...

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  18. If pN={px:x is a natural number} then 4N cap 10N is equal to

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  19. For any two nonempty sets A and B ,(Acup B)' cup (A'cap B) is equal to

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  20. If A={0,1} and B={0,-1} then show that AxxB ne BxxA

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