The median of the frequency distribution:

Marks	Number of students
0-5	7
5-10	5
10-15	2
15-20	4
20-25	1
25-30	6
30-35	3
35-40	8
40-45	9
45-50	5

The average of nine numbers is 50. The average of the first five numbers is 54 and the average of the last three numbers is 52. Find the sixth number of this set of numbers?

Read the information given in the table carefully and answer the question that follows:

NUMBER OF CALCULATORS SOLD BY SHOPS P, Q, R, & S IN JUNE, JULY AND AUGUST

(A) The difference between the total number of calculators sold by shops P and Q together in August and the number of calculators sold by shops R and S together in June is 42

(B) The average number of calculators sold by Shop S in the three months is 92

(C) The respective ratio between the total number of calculators sold by shops P and Q in July and the total number of calculators sold by shop Q in August is 45 : 31

Choose the correct answer from the options given below:

If the mean of 5 observations $x$, $x + 2$, $x + 4$, $x + 6$ and $x + 8$ is 11, then value of $x$:

The median of the observations 1, 13, 7, 19, 18, 15, 32, 28, 23, 24, 31 is:

Heights (in cm) of 15 students are:

142, 145, 148, 150, 152, 155, 148, 150, 150, 152, 155, 148, 150, 152, 148.

What is the median height of the students?

In the first 9 matches of a cricket tournament, the wickets taken by Jumpo are as follows:

3 2 0 1 3 0 5 1 4

Find the median of the number of wickets taken by Jumpo?