Question

c={x vertical line 5x-2=0,x belongs to N}​

Answer 1

Step-by-step explanation:

$C \: = \{x \: | \: 5x - 2 = 0 , \: x \in \: N \} \\ 5x - 2 = 0 \\ \implies \: 5x \: = 2 \\ \implies \: x \: = \frac{5}{2} \\ but \: x \in \: N \\ hence \: \\ x \neq \: \frac{5}{2} \: \\ therefore \: \\ C \: = \{ \} \\ that \: is \: C \: is \: a \: null \: set.$