Multiple choice

$\sqrt 2$ is an irrational number. What will be $3\sqrt 2 -1$?

  1. Rational

  2. Irrational

  3. An integer

  4. Neither rational nor irrational
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The product of a rational and an irrational number is irrational. And Difference of rational and irrational is irrational. Therefore,  $3\sqrt 2 -1$ is an irrational number.

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