Are you done here?

Solve egg question B on your printed sheet to find which area to go to next. Click pick up egg when your done.

Solve egg question C on your printed sheet to find which area to go to next. Click pick up egg when your done.

We need to choose the number that is the greatest common factor of 15 and 21.

To find the greatest common factor, list what multiplies together to get 15 and 21 and choose the largest number they both share.