Question

Which of the following are empty sets? Justify your answer. i) A = {x : x2 = 9 and 3x = 9} ii) B = {x : x + 2 = 0, x ∈ N} 1

Answer 1

Answer:

ii) B

Step-by-step explanation:

B = { Φ }

x + 2 = 0

x = -2

Since x belongs to N ( natural number) .