# The average of ten numbers is 7. If each number is multiplied by 12, then the average of new set of numbers is: Option 1) 50Option 2) 19                           Option 3) 82              Option 4) 84Option 5) 7

$Avg. = 7$
$If\: each\: no.\: is \: multiplied \: by\: a\: factor \: K$
$then\: new\: avg. = K*old \: avg.$
$New \: Avg. = 12*7=84$