How to find mode Practice Test

Examine the data set $\left \{ 4, 7, 3, 4, 9, 4, 7, 2, 10, N\right \}$. You are given that can be any integer from 1 to 10.

Which value(s) of would make 7 the only mode of the data set?

The data set below represents a class's scores on a recent math test. What is the mode score in the data set?

$\small \left \{ 77,70,68,89,67,95,77,92,83,77,68,75\right \}$