A card is selected at random from a pack of 52 cards. The probability of its being a red face card is

1. $\dfrac{3}{26}$

2. $\dfrac{3}{13}$

3. $\dfrac{2}{13}$

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

If a card is drawn from a well-shuffled pack of 52 playing cards, then the probability of this card being a king or jack is

1. $\dfrac{1}{26}$

2. $\dfrac{1}{13}$

3. $\dfrac{2}{13}$

4. $\dfrac{4}{13}$

A bag contains 3 red balls, 5 white balls and 7 black balls. The probability that a ball drawn from the bag at random will be neither red nor black is

1. $\dfrac{1}{5}$

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

3. $\dfrac{7}{15}$

4. $\dfrac{8}{15}$

A bag contains 4 red balls and 5 green balls. One ball is drawn at random from the bag. The probability of getting either a red ball or a green ball is

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

2. $\dfrac{5}{9}$

3. 0

4. 1