Question 1163127
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Since the average of the four numbers is  6,  hence,  their sum is   6*4 = 24.


The sum of some three numbers of these four numbers is &nbsp;24 &nbsp;(given); &nbsp;it implies that the fourth number is &nbsp;24-24 = 0 (zero).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>ANSWER</U>



Solved.


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