The probability of rolling the same number six times on a standard die is (1 in 6)5 or 1 in 7776, or about 0.0001286. The reason the exponent above is five instead of six is that the probability of rolling "some" number on one die is 1, so you need to look at the probability of the other five dice matching the first die. It would not matter if you rolled one die six times, or six dice one time. The odds are the same.
The answer depends on what "rolling a one" refers to.rolling a sum of one,rolling a difference of one,rolling a product of one,rolling a one on one die only,rolling a one on one or both dice.Unfortunately these probabilities are different and the question is ambiguous.
It depends on how many number are there on the die.
The odds of rolling any specific number in one roll of one die is 1 in 6. Each die is unrelated, so the odds of rolling the same specific number using six dice in one roll is 1 in 6 to the 6th, or 1 in 46,656.
the one is weak
The probability of rolling at least one 2 when rolling a die 12 times is about 0.8878. Simply raise the probability of not rolling a 2 (5 in 6, or about 0.8333) to the 12th power, getting about 0.1122, and subtract from 1.
The probability is 1/6.
Since there is only one even prime, 2, the probability of rolling a 2 with one die is 1 in 6.
one out of 6
One sixth
Rolling one die, it is 1/6. Rolling two dice, it is 2/6, which can be simplified to 1/3 or 33.33%.
It is rolling 1 or 2.