A number is chosen randomly from 10 to 99 (both inclusive) such that each number is equally likely to be chosen. The probability that at least one digit of the chosen number is 8 is:

1. $\Big(\dfrac{1}{5}\Big)$

2. $\Big(\dfrac{1}{9}\Big)$

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

4. $\Big(\dfrac{19}{20}\Big)$

A letter is chosen at random from all the letters of the English alphabets. The probability that the letter chosen is a vowel is:

1. $\Big(\dfrac{4}{26}\Big)$

2. $\Big(\dfrac{5}{26}\Big)$

3. $\Big(\dfrac{21}{26}\Big)$

4. $\Big(\dfrac{5}{24}\Big)$

A card is drawn from a pack of 52 playing cards. The probability of getting a queen of club or a king of heart is:

1. $\Big(\dfrac{1}{13}\Big)$

2. $\Big(\dfrac{2}{13}\Big)$

3. $\Big(\dfrac{1}{26}\Big)$

4. $\Big(\dfrac{1}{52}\Big)$

One card is drawn at random from a pack of 52 playing cards. The probability that the card drawn is either a red card or a king is:

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

2. $\Big(\dfrac{6}{13}\Big)$

3. $\Big(\dfrac{7}{13}\Big)$

4. $\Big(\dfrac{27}{52}\Big)$