Question

Let R be a relation from$A=\{1,2,3,4\}toB=\{1,3,5\}$ such that $R=\left[\right(a,b):a<b,whereaϵAandbϵB]$. What is $R$ equal to?

• A. $(1,3),(1,5),(2,3),(2,5),(3,5),(4,5)$
• B. $(3,1),(5,1),(3,2),(5,2),(5,3),(5,4)$
• C. $(3,3),(3,5),(5,3),(5,5)$
• D. $(3,3),(3,4),(4,5)$

Answer 1

The correct option is A $(1,3),(1,5),(2,3),(2,5),(3,5),(4,5)$

$A=\{1,2,3,4\},B=\{1,3,5\}R=\left[\right(a,b):a<b,whereaϵA\&bϵB]R=\left[\right(1,3),(1,5),(2,3),(2,5),(3,5),(4,5\left)\right]$