The mean of ten numbers is 12. If one of the ten numbers is removed, the mean becomes 11. What is the value of the number that was removed?

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asked Jan 21, 2024 68.4k views

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Wvp · Answer 1 · 2024-01-28T07:24:02+0000

The sum of the ten numbers is 10 * 12 = 120.

When one number is removed, the sum becomes 9 * 11 = 99.

The value of the number that was removed is 120 - 99 = 21.

The mean of ten numbers is 12. If one of the ten numbers is removed, the mean becomes 11. What is the value of the number that was removed?

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