Probability and Frequency

Q.

The following table shows number of males and females of a locality in different age groups.

$\begin{array}{cccc}\text{Age in years}& 10-20& 21-50& \text{Above}50\\ \text{Male}& 12& 16& 4\\ \text{Female}& 8& 14& 6\end{array}$

If one person is selected at random, find the probability that the selected person is male

1. $\frac{8}{15}$

2. $\frac{7}{15}$

3. $\frac{13}{60}$

4. $\frac{1}{4}$

Q.

If a letter is randomly picked from the word TREKKING, what is the probability it will be the letter K?

1. $\frac{1}{5}$

2. $\frac{1}{4}$

3. $\frac{2}{5}$

4. $\frac{1}{8}$

Q. Two dice are thrown simultaneously. What is the probability of not getting same numbers on both dice?