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Is the number $1 + 2$ rational or irrational? $\newline$ Choices: $\newline$ (A) rational $\newline$ (B) irrational

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Classify rational and irrational numbers

Full solution

Q. Is the number

1 + 2

rational or irrational?

\newline

Choices:

\newline

(A) rational

\newline

(B) irrational

Evaluate $1 + 2$ : Evaluate $1 + 2$ . Add $1$ and $2$ together. $1 + 2 = 3$
Add $1$ and $2$ : We found: $\newline$ $1 + 2 = 3$ $\newline$ Identify whether $1 + 2$ is a rational or irrational number. $\newline$ $3$ is a whole number, and all whole numbers are rational numbers because they can be expressed as a fraction where the denominator is $1$ ( $\frac{3}{1}$ ). $\newline$ Therefore, $1 + 2$ is a rational number.

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