i) 5 ∉ set of prime numbers

Question

State whether the following statements are true or false. Justify your answer. 

i) 5 ∉ set of prime numbers 

ii) S = {5, 6, 7} implies 8 ∈ S. 

iii) -5 ∉ W where ‘W’ is the set of whole numbers. 

iv) 8/11 ∈ Z 

where ‘Z’ is the set of integers.

Answer 1

i) False 

ii) False 

iii) True 

iv) False