Question

Which cannot be the probability of an event?

Answer 1

Probability: The number of favorable possibilities divided by the total number of possible outcomes generates probability, which is the likelihood that an event will occur.

The probability value varies from $0$ to $1$.
Probability is a ratio of favorable outcomes and total outcomes and its cant be get greater than $1$ or less then $0$.

If the probability of an event is more than $1$ or less than $0$, then that is not a probability of an event.