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Q.

Let Z be the set of all integers, A= (x,y)Z×Z: (x2) 2 + y 2 4   B={(x,y)Z×Z: x 2 + y 2 4}and   C={(x,y)Z×Z: (x2) 2 + (y2) 2 4)  


 

If the total number of relations from ABtoAC   is 2 p  , then the value of p is


 

 

 

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a

9 

b

25

c

16

d

49

answer is B.

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Detailed Solution

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Number of relations from set A to set B is 2 n(A)×n(B)  
 
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