Simplify the number to obtain the value in decimal.
[tex]\begin{gathered} \sqrt[]{12}=\sqrt[]{2\cdot2\cdot3} \\ =2\sqrt[]{3} \\ =2\cdot1.732 \\ =3.464 \end{gathered}[/tex]
The value 3.464 lies between 3 and 4, which are also consecutive whole number.
So answer is 3 and 4.
