1. Number

Middle Years

Is $4$4 rational or irrational?

Rational

A

Irrational

B

Easy

< 1min

Is $\frac{2}{3}$23 rational or irrational?

Easy

< 1min

Is $4.435$4.435 rational or irrational?

Easy

< 1min

Is $\sqrt{81}$√81 rational or irrational?

Medium

< 1min

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