Question
Question: The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16. Then the excluded num...
The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16. Then the excluded number is
A
18
B
25
C
26
D
30
Answer
26
Explanation
Solution
Sum of total number = 18 × 5 = 90
After one number excluded
Sum of total number = 16 × 4 = 64
Then, excluded number is 90 – 64 = 26.