: Why do all the probabilities add up to 1?

Question

When we roll a dice the probability of getting each number is (1/6). Apart from the fact that probabilities are supposed to be in the range of 0-1; why do they all add up to 1?

In: 3

Answer 1

They all add up to 1 because 1/1=100%. A probability is just x/1 or x/100% of something happening.