Question

how do you write N (the natural numbers) as an infinite union of infinite sets

Answer 1

Take the following infinite sequence of infinite sets:

asub1={1,2,3,...}
asub2={2,3,4,...}
asubn=(n,n+1,n+2,...}

Answer 2

Or, if you are a little more imaginative....

asub1={1, all prime numbers}
asub2={multiples of two}
asub3={multiples of three}
asubn={multiples of n}

Answer 3

thanks

Answer 4

No sweat. Do math every day.