it is simple there are 6 sides on a die each with a number ranging from 1-6 three and four are each a number in that range and there are 2 numbers and they only appear once on the die so the probability of rolling a 3 or 4 is a 2/6 or 2 out of six chance making it less likely to roll them than a 1, 2, 5, or 6 but more of a chance of rolling only one of them