A bag contains 20 red balls, 12 blue balls and 8 green balls. Three balls are drawn one by one with replacement, the probability that the third ball being green is :

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

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

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

4. 1.8

Below are given the probabilities A, B, C and D of an event. P(A) : $\dfrac{3}{5}$, P(B) : 1.2, P(C) : -1.2 and P(D) = $1\dfrac{2}{3}$. Which of the above values of the probabilities is possible :

1. Event A

2. Event B

3. Event C

4. Event D

Two dice are rolled together and the product (P) of their scores is obtained :

Event A : P is 6.

Event B : P is an odd number.

Event C : P is 35.

Which of the following event/events has probability equal to 0?

1. Events B and C

2. Events A and B

3. Event B

4. Event C

A card is drawn from a pack of a well shuffled cards. The probability of getting either a king or a queen is :

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

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

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

4. 0