Question

Which of the following is irratonal no ? √4/9,√12/√3,√5,√81

Answer 1

Answer:

$\sqrt{5}$

Step-by-step explanation:

$\frac{ \sqrt{4} }{9} = \frac{2}{9} \\ \frac{ \sqrt{12} }{ \sqrt{3} } = \sqrt{ \frac{12}{3} } = \sqrt{4} = 2 \\ \sqrt{81} = 9$

the above noted numbers are rational numbers

Answer 2

Answer:

√5

Step-by-step explanation:

√4/9 is not irrational

√12/√3 is not irrational

√81 is not irrational

so,√5 is rational number