If the probability of an event is p, then the probability of its complementary event will be

1. p - 1

2. p

3. 1 - p

4. 1 - $\dfrac{1}{p}$

Out of one digit prime numbers, one number is selected at random. The probability of selecting an even number is

1. $\dfrac{1}{2}$

2. $\dfrac{1}{4}$

3. $\dfrac{4}{9}$

4. $\dfrac{2}{5}$

The probability of getting a number divisible by 3 in throwing a die is

1. $\dfrac{1}{6}$

2. $\dfrac{1}{3}$

3. $\dfrac{1}{2}$

4. $\dfrac{2}{3}$

A fair die is thrown once. The probability of getting an even prime number is

1. $\dfrac{1}{6}$

2. $\dfrac{2}{3}$

3. $\dfrac{1}{3}$

4. $\dfrac{1}{2}$