MCQ
The contrapositive of $2x + 3 = 9 \Rightarrow x \neq 4$ is.
- A$x \neq 4, 2x + 3 \neq 9$
- ✓$x = 4, 2x + 3 \neq 9$
- C$x = 4, 2x + 3 = 9$
- D$x \neq 4, 2x + 3 = 9$
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$\mathop {Limit}\limits_{n\,\, \to \,\,\infty } $$\frac{1}{{{n^4}}}$ $\left( {\left[ {{1^3}\,x} \right]\,\, + \,\,\left[ {{2^3}\,x} \right]\,\, + \,\,......\,\, + \,\,\left[ {{n^3}\,x} \right]} \right)$ equals