A letter of English alphabet is chosen at random. The probability that it is a letter of the word ENGINEERING is:

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

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

3. $\Big(\dfrac{11}{26}\Big)$

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

A letter is picked at random from the letters of the word MATRICULATION. The probability that the chosen letter is a vowel, is:

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

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

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

4. $\Big(\dfrac{4}{13}\Big)$

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