As a fraction in simplified form, 3.5 is equal to 7/2 .
But you say you want something that's repeating.
That's a problem . . . there's no part of 3.5 that's repeating now, and if I just go ahead and write something that does repeat, my invention will change the value, and it won't be equal to 3.5 any more.
Here's one possibility, I guess: <em>3.500 000 000 000 000 000 000 . . .</em>
The zeros repeat infinitely, and no matter how many (or how few) zeros you write, the value of the number is always 3.5 and it never changes.
If it's the ' 5 ' on the end that you want to see repeating, that's actually easier to work with. Then we have <em>3.555 555 555 555 555 555 . . .</em>
THOSE fives really do keep repeating and never end, and that number is equal to <em>(3 and 5/9)</em> or<em> (32/9) </em>.
