30. Which of the following is irrational?
A. 49

B.
[tex] \sqrt{141} [/tex]

C. 0.333...

D.
[tex] \sqrt{ \frac{4}{9} } [/tex]
31. Which of the following is rational?
A.
[tex] \sqrt{26} [/tex]

B.
[tex] \sqrt{39} [/tex]

C.
[tex] \sqrt{410} [/tex]

D.
[tex] \sqrt{64} [/tex]
​