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1.Relation and Function
easy
$A$ relation $R$ is defined from $\{2, 3, 4, 5\}$ to $\{3, 6, 7, 10\}$ by $xRy \Leftrightarrow x$ is relatively prime to $y$. Then domain of $R$ is
A
$\{2, 3, 5\}$
B
$\{3, 5\}$
C
$\{2, 3, 4\}$
D
$\{2, 3, 4, 5\}$
Solution
(d) Given, $xRy \Rightarrow x$is relatively prime to $y.$
$\therefore$ Domain of $R = \{ 2,\,3,\,4,\,5\} $.
Standard 12
Mathematics