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The mean of nine numbers is 12 , if one of the numbers is removed , the mean becomes 13 , What is the number that was removed .
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The mean of nine numbers is 12 , if one of the numbers is removed ,

the mean becomes 13 , What is the number that was removed .

User Thatryan
by
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1 Answer

9 votes

Answer:

  • 4

Explanation:

Mean of 9 numbers is 12.

Total of 9 numbers:

  • 9*12 = 108

Mean of 8 numbers is 13.

Total of 8 numbers:

  • 8*13 = 104

Removed number:

  • 108 - 104 = 4
User YoungDad
by
7.4k points
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