Question

Which one of the following is not a rational number?
a) √4 b) √100 c) 3√8 d) -√0.64

Answer 1

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Answer 2

Answer:

3(8)^1/2

Step By Step Solution

(4)^1/2=2. (where 2 is rational number )

(100)&1/2=10. (where 10 is rational number )

-(0.64)^1/2=-0.8. (where 0.8 is a rational number)

But, 3(8)^1/2 =8.48528.............

(where 8.48528 is a irrational number)

Therefore answer is 3(8)^1/2

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