$A$ die has two faces each with number $1$,three faces each with number $2$,and one face with number $3$. If the die is rolled once,then $P(1 \text{ or } 3)$ is

Two dice are rolled one after the other. The probability that the number on the first die is smaller than the number on the second die is:

The chances to fail in Physics are $20\%$ and the chances to fail in Mathematics are $10\%$. What are the chances to fail in at least one subject? ............ $\%$

In a set of $30$ game cards,$17$ are white and the rest are green. Out of $30$,$4$ white and $5$ green cards are marked $IMPORTANT$. If a card is chosen randomly from this set,then the probability of choosing a green card or an $IMPORTANT$ card is:

When two dice are thrown simultaneously,what is the probability that the sum of the numbers on the top faces is $5$?

Two dice are thrown simultaneously. The probability of getting the sum $2$,$8$,or $12$ is