There are 6 sides of a die, and rolling a 3 is one of the 6 sides.
Therefore, there are 5 sides on the die which is not a 3.
So, (outcomes wanted)/(total outcomes) = 5/6
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Sample space is 1,2,3,4,5,6. One is a 3 and the other 5 are not a 3. So, probability of not 3 is 5/6 or 0.833.
2 out of 3
The answer depends on what you are rolling: a number cube or some other shape? For a die, the answer is 2/3.
There is a 4 in 6 (or 2 in 3) probability of rolling a number less than a five on a standard number cube.
It is 1.
The probability of getting tails on a coin is SMALLER than rolling a number greater than 2