Answer to Question #267848 in Discrete Mathematics for Jaishree

Question

Determine whether the relation R on the set of all people

is reflexive, symmetric, antisymmetric, and/or transitive,

where (a, b) ∈ R if and only if

a) a is taller than b.

b) a and b were born on the same day.

c) a has the same first name as b.

d) a and b have a common grandparent.