Carcass sir, i have very silly doubt , in case of mean or avg there is no need to arrange series in ascending or descending order ?
as if we see here a+b=60 thus c+d=100 and we take the series, same as question then it will be a , b , c, d = 30 , 30 , 30, 70 (here i took a, b , c as 30 in order to make d greatest) >> here d is less than 99
and if the series is like this c , a , b , d = 1 , 30, 30 , 99 >> here d is equal to 99
but if we directly take without arranging them in an order than we can solve it in the same way as BrushMyQuant did , so in case of mean or avg there is no need to arrange series in ascending or descending order ?