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What is the negation of: Ram is in class X or Rashmi is in class XII?

$\begin {array} {1 1} (A)\;Ram\: is\: not\: in\: class \: X \: and\: Rashmi\: is\: not\: in\: class\: XII. \\ (B)\;Ram\: is\: not\: in\: class\: X\: but\: Rashmi \: is\: in\: class\: XII. \\ (C)\;Either\: Ram \: is \: not \: in\: class\: X\: or \: Rashmi \: is\: not\: in \: class\: XII \\ (D)\;None\: of \: the \: above \end {array}$

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Ans : (A)
Let p: Ram is in class X $ \: \: \: $q: Rashmi is in class XII
Given proposition is p V q.
Its negation is ~(p V q) = ~p Λ ~q, i.e, Ram is not in class X and
Rashmi is not in class XII.


answered Jan 20, 2014 by thanvigandhi_1
edited Jan 21, 2014 by thanvigandhi_1
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