A die is thrown once. The probability of getting a number which has at least two factors is:

1. 1

2. $\Big(\dfrac{1}{2}\Big)$

3. $\Big(\dfrac{2}{3}\Big)$

4. $\Big(\dfrac{5}{6}\Big)$

There are 3 yellow, 5 white and 7 green balls in a bag. A ball is drawn from the bag at random. The probability that the ball drawn is not white, is:

1. $\Big(\dfrac{1}{3}\Big)$

2. $\Big(\dfrac{2}{3}\Big)$

3. $\Big(\dfrac{3}{5}\Big)$

4. $\Big(\dfrac{1}{2}\Big)$

Cards marked with numbers 1 to 100 are placed in a box and mixed thoroughly. A card is drawn at random from the box. The probability that the selected card bears a perfect square number is:

1. $\Big(\dfrac{1}{10}\Big)$

2. $\Big(\dfrac{2}{25}\Big)$

3. $\Big(\dfrac{9}{100}\Big)$

4. $\Big(\dfrac{11}{100}\Big)$

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3?

1. $\Big(\dfrac{1}{2}\Big)$

2. $\Big(\dfrac{2}{5}\Big)$

3. $\Big(\dfrac{3}{10}\Big)$

4. $\Big(\dfrac{3}{20}\Big)$