Question

if a ={1 2 {3 4} 5} then ___ is incorrect
option in that photo
pls help​

Answer 1

Answer:

c option is incorrect

Step-by-step explanation:

{3.4}is another set inside the another set

representation for it will be {{3.4}}⊆A

Answer 2

Answer:

c option is correct

Step-by-step explanation:

Thanks