Question

Rational numbers are _____ natural numbers.? 1.)always 2.)sometimes 3.)never

Answer 1

Rational numbers are 2.) sometimes natural numbers.

For a number to be rational, it has to be able to be written as a ratio, such as 1/2 or 3/1. 
For a number to be natural, it has to be a whole number. So, 3/1 could be is natural and rational, while 1/2 is only rational.

Answer 2

I think it sometimes but im not sure