Question

Which of the following is an irrational number? (With explanation)

√81

√−16

√−64

√200

Answer 1

√200

Explanation:

An irrational number is a number that can not be represented as a fraction

√81 = 9 = 9/1

√-16 = 4i

√-64 = 8i

√200 = ~14.14213