The numbers 10, 12, 14, 16, 17 and x are in ascending order. If the mean and median of these observations are same, the value of x is :

1. 16

2. 14

3. 54

4. 21

The median of first six prime numbers is :

1. 5

2. 7

3. 6

4. 7.5

The mean of 1, 7, 5, 3, 4 and 4 is m. The numbers 3, 2, 4, 2, 3, 3 and p have mean m - 1 and median q. Find p and q.

In a malaria epidemic, the number of cases diagnosed were as follows :

On what days do the mode, the upper and the lower quartiles occur ?