Let $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ be four non-empty sets. The contrapositive statement of "If $\mathrm{A} \subseteq \mathrm{B}$ and $\mathrm{B} \subseteq \mathrm{D},$ then $\mathrm{A} \subseteq \mathrm{C}^{\prime \prime}$ is
If $\mathrm{A} \subseteq \mathrm{C},$ then $\mathrm{B} \subset \mathrm{A}$ or $\mathrm{D} \subset \mathrm{B}$
If $\mathrm{A} \ne \mathrm{C},$ then $\mathrm{A} \neq \mathrm{B}$ or $\mathrm{B} \ne \mathrm{D}$
If $\mathrm{A}\ne\mathrm{C},$ then $\mathrm{A} \subseteq \mathrm{B}$ and $\mathrm{B} \subseteq \mathrm{D}$
If $\mathrm{A} \neq \mathrm{C},$ then $\mathrm{A} \neq \mathrm{B}$ and $\mathrm{B} \subseteq \mathrm{D}$
The contrapositive of the statement "If you will work, you will earn money" is ..... .
Contrapositive of the statement 'If two numbers are not equal, then their squares are not equal', is
The statement "If $3^2 = 10$ then $I$ get second prize" is logically equivalent to
Which of the following is equivalent to the Boolean expression $\mathrm{p} \wedge \sim \mathrm{q}$ ?
Let $p, q, r$ denote arbitrary statements. Then the logically equivalent of the statement $p\Rightarrow (q\vee r)$ is