Question

Which of the following is an irrational number?
(a) √ 8/ 2 (b) (∛5 ³/² (c) √81 (d) (√5)

Answer 1

a) √8/2 = √4 = 2

therefore, √8/2 is not irrational number

b) question is improper

if the question is ³√5³

=5

therefore, ³√5³ is not irrational number

c) √81 = 9

therefore, √81 is not irrational number

d) √5 is a irrational number

hope this was helpful