Question bank/JEE Main/Mathematics

Which of the following is a null set?

A$\left\{ x:x \in Z\ and\ \frac{- 1}{2} < x < \frac{9}{2} \right\}$B$\{ x:x \in N\ and\ x - 4 \leq 15\}$C$\{ x:x \in N,x < 5\ and\ x > 8\}$D$\left\{ x:x \in N\ and\ x^{2} < 40 \right\}$

Show answer and solution▾

[IMAGE] There is no value of x which x which is both case than 5 and breather
than and breather than and.
$\Rightarrow$ Null set.

Source: Grass-G / M-05 Mathematics Paper 10 October.docx