Question

9. The mean of 11 numbers is 7. The number, 0, is added to each number.
What is the arithmetic mean of the new set of numbers?
A. 7.7
B. 6.4
C. 6.0
D. 7​

Answer 1

Answer:

Option D-7. Because there is no change after adding 0 to the each number.

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Answer 2

Answer:

6.4

mean of 10 number is 20

sum of the number is 200