The sum of the frequency = 6+7+4+7+6+10=40
The number of times 3 occurred is = 4
Therefore the probability it will land on 3
[tex]\begin{gathered} \frac{number\text{ of times 3 occurred}}{\text{total frequency}} \\ =\frac{4}{40} \\ =\frac{1}{10} \end{gathered}[/tex]