The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16.

Question

The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16. Then the excluded number is

Options:

A . 18

B . 25

C . 26

D . 30

Answer: Option C
:
C

Sum of total number $= 18 \times 5 = 90$
                After one number excluded
                Sum of total number $= 16 \times 4 = 64$
                Then, excluded number is $90 - 64 = 26$

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. If the median and mode of 4 observations is 4, 6 and the sum of squares of observations is 48. Then standa....sum of squares of observations is 48. Then standard deviation is

Question 2. The mean weight per student in a group of seven students is 55 kg if the individual weights of 6 students are 52, 58, ....56 and 54; then weight of the seventh student is

Question 3. The mean of a set of observation is ¯¯¯x .If each observation is divided by α α≠....increased by 10, then the mean of the new set is

Question 4. If the coefficient of variation of data pertaining to goals scored by two teams A and B in a football season are 2.5 a....7.2 respectively, then which of the following statements i strue?

Question 5. If the range of discrete data of n observations is zero, then ....

Question 6. The mean deviation of 2, 4, 6, 8, 10 about its mean is ....

Question 7. The coefficient of variation of a distribution is ....

Question 8. If a variable takes the discrete values α+4,α−72,α−52,α−3,α−....a variable takes the discrete values α+4,α−72,α−52,α−3,α−2,α+12,α−12,α+5(α>0),then the median is

Question 9. The variance of the data 2, 4, 6, 8, 10 is: ....

Question 10. If the mean of the number 27+x,31+x,89+x,107+x,156+x is 82, then the mean of 130+x,126+x,68+x,50+x,1+x is ....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

GPOE / GPA Combined 1 Free Mock Test SAIL JO E-0 2024

ICA Combined 1 Free Revision Test SAIL JO E-0

RDIC Review Test SAIL JO E-0

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

RSP Combined 1 Free Revision Test SAIL JO E-0

Submit Solution

More Questions on This Topic :

Latest Videos

Latest Test Papers