Question

5. The mean of first seven even natural numbers is
(b) 5.5
.(c) 54
(d) 5.2
(a) 7
(b) 8
6. The mean of first six multiples of 5 is
(c) 9
(d) 6
(a) 3.5
(b) 18.5
7. The mean of 5 numbers is 4. If 1 is added to each number, then the new meanis
(c) 17,5
(d) 30
(a) 4
(b) 5
8. If the sum of 10 observations is 95, then their mean is
(c) 3
(d) 5.5
(a) 9.5
(b) 10
(c) 950
(d) 95
9. If the mean of n observations is 12 and the sum of the observations is 132, then the value of
nis
(a) 9
(b) 10
(c) 11
(d) 12
10. The median of the data 9, 12, 11, 10, 8, 9, 11 is
(a) 10
(b) 11
(c) 9
(d) None of these
11. The median of the data 5, 7, 9, 10, 11 is
(a) 7
(b) 9
(c) 11
(d) 10
12. The mean of a data is 15 and the sum of the observations is 195. The number of observations
is
(a) 13
(b) 19
(c) 16
13. The median of 11 observations is 10. The number of possible observations in the data which
are less than 10 is
(b) 6
(c) 3
(d) 10
2,163
(d) 17द मीन ऑफ फर्स्ट 7 इवन नेचुरल नंबर ​

Answer 1

Step-by-step explanation:

5.(b) option is correct 8

6.(a) is correct 3.5

Answer 2

Step-by-step explanation:

5.(b)8

6.17.5

7.(b)5

8. 9.5(a)

9.(c)11

10.(a)10

11.(b)11

12.(a)13