Question

Which of the following is irrational?A.24.3B./2D. /25C.7

Answer 1

a) 24.3 is a rational number

`(243)/(10)`

b)

`\begin{gathered} √(2)=1.41421 \\ √(2)\text{ is irrational} \end{gathered}`

c) 7 is a rational number

d)

`\begin{gathered} √(25)=5 \\ \sqrt[]{25}\text{ is rational} \end{gathered}`

Answer: Letter B