Math Discrete

It is known that the binary relation R on the set A $=\{1,2,3,6,8,9,12,16,18,28,32,36\}$

which is defined by: $on$ the picture

Determine:

a$.$ Hasse diagram

b$.$ Maximum, maximum, minimum and minimum elementsElemen maksimal, maksimum, minimal dan minimumnya"

c$.$ Upper Bound, Lower Bound, Least Upper Bound and Greatest Lower Bound

from $\{6,8,9\}$