Question

The mean of 10 numbers is 32. If one number is excluded, then the mean gets reduced by 2
Determine the excluded number.
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Answer 1

Given that Mean of 10 numbers = 32.

Then the total sum of numbers = 32 * 10

= 320.

Given that 1 number is excluded, the mean gets reduced by 2.

So, Mean of 9 numbers = 32 - 2

= 30.

Therefore the total sum of numbers = 9 * 30

= 270.

Therefore the excluded number = 320 - 270

= 50.

Hence the excluded number = 50.

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