Natural Numbers = 1, 2, 3, …
Given equation:
x
2 = 16
⇒ x = √16
⇒ x = ± 4
⇒ x = -4, 4
but x = -4 not possible because x ∈ N
So, there is only 1 element in a set.
∴ It is a singleton set.
Which of the following are examples of the singleton set? {x : x ε N, x2 = 16}.
Which of the following are examples of the singleton set? {x : x ε N, x2 = 16}.