Question

The mean of a set of 12 numbers is 24. If one item is excluded, the mean gets reduced by 3. What is the excluded number?

Answer 1

Answer:

Step-by-step explanations-

Calculated mean of 12 numbers=24

Calculated sum of 12 numbers=(24×12)=288

Let the excluded number be X,

New mean=(24-3)=21

New sum=(21×11)=231

So,X =(288-231)=57

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