Choose the incorrect statement.
If a card is picked at random from cards numbered 1 to 16, then:

1. the probability that the drawn card bears a number which is a factor of 16 is $\Big(\dfrac{1}{4}\Big)$

2. the probability that the drawn card bears an odd composite number is $\Big(\dfrac{1}{8}\Big)$

3. the probability that the drawn card bears a number which is a multiple of both 2 and 3 is $\Big(\dfrac{1}{8}\Big)$

4. the probability that the drawn card bears a number which is both a perfect square and a perfect cube is $\Big(\dfrac{1}{16}\Big)$

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

In a family of 3 children, the probability of having at least one boy is:

1. $\Big(\dfrac{1}{8}\Big)$

2. $\Big(\dfrac{5}{8}\Big)$

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

4. $\Big(\dfrac{7}{8}\Big)$

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