Which of the following is not a rational number?

zero point seven three with a line over three to indicate repeating

twenty-five thirteenths

zero point one eight three four nine zero five two dot dot dot

twenty over one

I will give a medal to the person who helps me understand this the most.

Question

Which of the following is not a rational number?

zero point seven three with a line over three to indicate repeating

twenty-five thirteenths

zero point one eight three four nine zero five two dot dot dot

twenty over one 

I will give a medal to the person who helps me understand this the most.

anonymous · Answer

if there is a decimal with no repeating sign then it is irrational:)

anonymous · Answer

and it goes on forever

anonymous · Answer

0.6 is not irrational   0.67305876876528060876...

anonymous · Answer

is irrational