A random variable X has the following probability distribution

Then $\mathrm{p}(x \geq 2)$ is equal to

The probability, that a year selected at random will have 53 Mondays, is

A multiple choice examination has 5 questions. Each question has three alternative answers of which exactly one is correct. The probability that a student will get 4 or more correct answers just by guessing is

A random variable $X$ has the following probability distribution

For the event $E=\{X$ is a prime number $\}$, $F=\{X<4\}$, then $P(E \cup F)$ is