Q: Why cannot a probability not be less than 0?

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No. A probability of 1 means something will definitely happen. There cannot be a greater certainty than that, so probability cannot be greater than 1. 0 means there is no chance of something happening. You cannot have less than no chance of something happening. So a probability cannot be less than 0.

Probability value can only be real number between 0 to 1, therefore, it cannot be greater than 1 or less than 0 or a complex number.

Probability can not be less than 0 or greater than 1. A probability of 0 means there is no possibility whatsoever of an event occurring. A probability of 1 means that the event is guaranteed to occur no matter what.

Because probability is measured from zero to one, where zero means something cannot happen and one meaning it will definitely happen. This can also be looked at as there being a 0% chance or 100% chance of it happening. So obviously there can not be less of a chance than it definitely not happening, so it cannot be less than zero.

0 represents that is will never happen. It means that there is no probability that it will happen. 1 represents that is is certain to happen. You cannot be more certain than definitely certain, and something cannot be less probable than not at all.

Probability of 0 is impossible, and 1 is certain. So, probability must be between 0 and 1, inclusive.

No. Probability must be between 0 and 1.

No, all probabilities are given from a scale of 0 to 1. 0 represents 0% and 1 represents a 100% probability.

NO, but that is a great question since probability is often expressed as a fraction. Here is the difference. If P(x) is the probability that even x happens, this value must be between 0 and 1. So fractions such as 1/2 or 2/1112 are all fine. Many fractions, such as 4/3 cannot be a probability since they are greater than one. Similarly, -1/2 cannot be a probability value since it is less than 0/

No, it must be a number in the interval [0, 1].

Larger or equal to 0 but less than or equal to 1

Yes, a probability of 0 is something that cannot happen.

1.34 cannot be the probability of an event because the range of possibility is 0 to 1. 0 is an impossible event and 1 is a certain event. There cannot be a possibility higher than certain so 1.34 is not possible.

From the related link, you can read directly the probability that Z is less than 1.51 is 0.9345.

certainty (no doubt), probability or likelihood (greater than 50% chance), possibility (greater than 0% but less than 50% chance)

It is 0.

There is insufficient information in the question to properly answer it. You did not provide the list of "the following". Please restate the question. However, by definition of probability, a probability less than 0 (the event will never happen) or greater than 1 (the event will always happen) is impossible, so maybe that answers your question.

There are many such events. The probability of throwing a 1 or 2 on one roll of a die, for example.

probability is 43.3%

A probability can be no larger than 1 and no smaller than 0.

Probability values are never negative and are always between 0-1 according to the definition Probability of A= Number of outcomes classified as A/Total number of possible outcomes

It is something that cannot happen.

If the probability of an event is zero then that event cannot happen

We use probability to determine if something is likely to happen or not. If the probability is that the incident will definitely happen, then that probability figure is 100% or 1, while if the incident definitely cannot happen the probability figure is 0% or 0; every other possible probability lies somewhere between 0 and 1 (or 0% and 100%).

Probability is defined in such a way that 0 (or 0%) means that something is impossible to happen, and 1 (or 100%) means that the event is inevitable. Anything in between means that it MAY happen. Anything outside that range doesn't make sense.

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