Question 1143828
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Then the 8-th number is 30,

     the 7-th number is 29,

         6-th           28

         5-th           27

         4-th           26

         3-rd           25

         2-nd           24

         1-st           23


and the average of the first 8 numbers is   {{{(23+24+25+26+27+28+29+30)/8}}} = 26.5.   <U>ANSWER</U>
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