Question

If ξ = N and A = {x | x ∈ N and x ≤ 15 }, then A' is ______​

Answer 1

Answer:

A =  { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }

Step-by-step explanation:

A =  { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 }

Answer 2

Step-by-step explanation:

Given that:If ξ = N and A = {x | x ∈ N and x ≤ 15 }

Find: A'

Solution:

There is some correction,

If U = N,i.e. set of natural numbers

and A = {x | x ∈ N and x ≤ 15 }

Roster form of A ={1,2,3,4,5..., 14,15}

To find A',we have to take those elements of U(universal set) which does not belongs to A.

Thus,

A'={16,17,18,19...∞}

We can also express A' in set builder form as

A'={x | x ∈ N and x>15}

or

A'={x | x ∈ N and x≥16}

Hope it helps you.