Does infinity divided by zero theoretically equal any number other than 0 or infinity? The negative real numbers can be discarded, and infinity introduced, leading to the set [0, ∞], where division by zero can be naturally defined as a/0 = ∞ for positive a.While this makes division defined in more cases than usual, subtraction is instead left undefined in many cases, because there are no negative numbers. Remember that infinity is not a number but is is treated as if it is something larger than any number. Usually division by zero is left undefined. To find infinity divided by infinity is what, you must come back to the origin of your infinity, it can be 0, 1, 2, 5 or even infinity, example: Infinity 1 = 10/0. This means that it doesn’t equal anything. Here are the rules: 1. Thus the 'answer' to your question is 0. Infinity is not a defined number, it is a very big number that we can't define. When we divide infinity by 0, it becomes a bigger infinity. The reason for this is that it is nice to have the property that anything multiplied by zero is zero. Or mathematicially more precise: approaches zero. And so on. Infinity divided by any finite number is infinity. Any finite number divided by infinity is a number infinitesimally larger than, but never equal to, zero (f / I = 1 / I); 3. For example 10^99999999999 is infinity but 10^9999999999999999999999999999 is a bigger infinity !!!! 10^9999999999999999999999999999 is a bigger infinity !!!! Infinity divided by a finite number is infinite (I / f = I); 2. For example 10^99999999999 is infinity but 10^9999999999999999999999999999 is a bigger infinity !!!! Regards. So: infinity 1 / infinity 2 = 10/5 = 2. Hope that I knew how to explain it. 0 is your answer (not a number close to zero). Any number divided by infinity is equal to 0. Infinity is a concept, not an actual number, so we can't just divide a number by infinity. Infinity 2 = 5/0. Infinity is not a defined number, it is a very big number that we can't define. If you take 0 and divide by 10000, what would you get? To explain why this is the case, we will make use of limits. Regardless of what large number we're dividing by our answer is 0 and by letting this large number increase (as much as we please, tending to infinity) the answer is still 0. I heard something about ohm's law applied to a circuit with an ideal voltage source (which is only theoretically possible) and having the terminals shorted out and at 0 ohms, resulting in the current going up to infinity?