The average of 10 number is 7 if this number is multiplied by 12 then the average of the remaining number will be
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solution==84
given:avg of 10 numbers is 7....
w.k.t avg=sum/total number of elements
so sum=10*7=70
if each number is multiplied by 7 -->>sum(12)
average of new set=(70*12)/10 =840/10 ==84
ans:-84
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