For this part, you will find it helpful to use a Venn diagram. You may submit a Venn diagram or thoroughly explain how you reached each answer.

In a math 105 class of 32 students, a survey showed that 20 students used the ALEKS e-text at least once, 10 used a video at least once, and 7 used both the e-text and a video at least once.

1.How many students used only the e-text?

2.How many students used neither the e-text nor the videos at least once?