If A=-5 and B=5 and you are looking for the distance it might be easiest to draw it out on a number line and count the numbers. Answer should be: distance from A to B is 10.
If I am rolling a single dice what is the probability of rolling a number that is divisible by 2 and 3? The only number divisible by 2 and 3 is 6. So, would the answer be 1 out 6 or 1/6