List all the elements of set B that belong to the indicated set.
-$$B = \left\{ 10 , \sqrt { 6 } , - 21,0 , \frac { 0 } { 5 } , \sqrt { 4 } , \frac { - 8 } { 0 } , 0.27 \right\}$$
Rational numbers
A) $10,0 , \sqrt { 4 }$
B) $10 , - 21,0 , \frac { 0 } { 5 } , \sqrt { 4 } , 0.27$
C) $\sqrt { 6 } , \sqrt { 4 }$
D) $\sqrt { 6 } , \frac { 0 } { 5 } , 0.27$

Question

Quizplus · Accepted Answer

Rational numbers are numbers that can be expressed as a fraction of two integers. In set B, $10, -21, 0, \frac{0}{5}, \sqrt{4},$ and $0.27$ are rational. $10, -21, 0,$ and $0.27$ are clearly rational. $\frac{0}{5} = 0$ is rational, and $\sqrt{4} = 2$ is also rational. $\sqrt{6}$ and $\frac{-8}{0}$ (undefined) are not rational.

List All the Elements of Set B That Belong to the Indicated