The relation R is defined on the set of natural numbers as {(a, b) : a = 2b}. Then \[{{R}^{-1}}\] is given by

The relation R is defined on the set of natural numbers as {(a, b) : a

1.	The relation R is defined on the set of natural numbers as {(a, b) : a = 2b}. Then \[{{R}^{-1}}\] is given by
A.	{(2, 1), (4, 2), (6, 3).....}
B.	{(1, 2), (2, 4), (3, 6)....}
C.	\[{{R}^{-1}}\] is not defined
D.	None of these
Answer» C. \[{{R}^{-1}}\] is not defined

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The relation R is defined on the set of natural numbers as {(a, b) : a = 2b}. Then \[{{R}^{-1}}\] is given by

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