Question

Negation of “Ram is in Class X or Rashmi is in Class XII” is

• A. Ram is not in class X but Ram is in class XII
• B. Ram is not in class X but Rashmi is not in class XII
• C. Either Ram is not in class X or Ram is not in class XII
• D. None of these

Answer 1

Answer: (D)

None of these

Answer 2

Let p : Ram is in Class X, q : Rahim is in class XII

Given proposition is $p \vee q$

Its negation is $\sim(p \vee q) = \mspace{6mu}\sim p \land \sim q$

i.e. Ram is not in class X and Rahim is not in class XII.