Q.

Let A = {0, 3, 4, 6, 7, 8, 9, 10} and R be the relation defined on A such that R={(x,y)A×A:x-y is odd positive integer or x-y=2}.

The minimum number of elements that must be added to the relation R, so that it is a symmetric relation, is equal to __________ .

(A) 19                          (B) 18                              (C) 16                        (D) 17

AA
BB
CC
DD

A.

 



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limndn(1a1+a2+1a2+a3+...+1an-1+an) is

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