Question

Let set $X= \\{a, b, c\\}$ and $Y = \phi$. The number of ordered pairs in $X \times Y$ are

• A. $0$
• B. $1$
• C. $2$
• D. $3$

Answer 1

Answer: (A)

$0$

Answer 2

$X \times Y = \\{a, b, c\\} \times \\{\\} = \phi$ Hence there are no ordered pairs formed in $X \times Y$.