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Question: Answered & Verified by Expert
The Statement that is TRUE among the following is
MathematicsMathematical ReasoningJEE MainJEE Main 2012 (07 May Online)
Options:
  • A
    The contrapositive of $3 x+2=8 \Rightarrow x=2$ is $x \neq 2$ $\Rightarrow 3 x+2 \neq 8$.
  • B
    The converse of $\tan \mathrm{x}=0 \Rightarrow x=0$ is $x \neq 0 \Rightarrow$ $\tan x=0$.
  • C
    $p \Rightarrow q$ is equivalent to $p \vee \sim q$.
  • D
    $p \vee q$ and $p \wedge q$ have the same truth table.
Solution:
2712 Upvotes Verified Answer
The correct answer is:
The contrapositive of $3 x+2=8 \Rightarrow x=2$ is $x \neq 2$ $\Rightarrow 3 x+2 \neq 8$.
Only statement given in option
(a) is true.
(b) The converse of $\tan \mathrm{x}=0 \Rightarrow x=0$ is $x=0 \Rightarrow \tan x=0$
$\therefore$ Statement (b) is false
(c) $\sim(p \Rightarrow q$ is dquivalent to $p \wedge \sim q$
$\therefore$ Statement given in option (c) is false.
(d) No, $p \vee q$ and $p \wedge q$ does not have the same truth value.

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