
many solutions possible but in all a,l,d=0 r=g
like: 031000+231000=262000

quite easy one: all divisible by 12
16 mumbers......12..24..36........192

upon visually interpretation(using graph theory)
c=3d, 16*d*d=36*(ab) a=b
so a=2,b=2,c=9,d=3
a+b+c+d=12
to solve ...we can first visualize by drawing these straight lines that these must represent a rhombus and when area is becoming onefourth by one vertex from (d,0) to (d,0) that means both diagonals of rhombus would have half lengths of their previous lengths. i.e c+d=2(cd) so c=3d and calculating length of other diagonal and given the area we get
(c+d)*2(c+d)/(ab)=72
so that gives us ans

kanchunjunga or mount k2
