Advertisements
Advertisements
Question
Find the mean of first 10 prime numbers and first 10 composite numbers
Advertisements
Solution
First 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
Mean = `"Sum of all data"/"Number of data"`
= `(2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29)/10`
= `129/10`
Mean = 12.9
Mean of first 10 prime numbers = 12.9
First 10 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
Mean = `(4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18)/10`
= `112/10`
= 11.2
Mean of first 10 composite numbers = 11.2
APPEARS IN
RELATED QUESTIONS
Find the mean of the first five whole numbers.
The mean of 5 observations is 50. One of the observations was removed from the data, hence the mean became 45. Find the observation which was removed.
Two vessels contain 20 liters and 60 liters of milk respectively. What is the amount that each vessel would have if both share the milk equally?
In a class test in mathematics, 10 students scored 75 marks, 12 students scored 60 marks, 8 students scored 40 marks and 3 students scored 30 marks. Find the mean of their score
In a research laboratory scientists treated 6 mice with lung cancer using natural medicine. Ten days later, they measured the volume of the tumor in each mouse and given the results in the table
| Mouse marking | 1 | 2 | 3 | 4 | 5 | 6 |
| Tumor Volume (mm3) | 145 | 148 | 142 | 141 | 139 | 140 |
Find the mean
If the average selling price of 15 books is ₹ 235, then the total selling price is __________
The mean of the data 12, x, 28 is 18. Find the value of x
Which measures of central tendency get affected if the extreme observations on both the ends of a data arranged in descending order are removed?
Mean of the observations can be lesser than each of the observations.
In a class of 100 students there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
