i have no idea of how to solve this equation

The letter tiles shown below are in a bag. whiteout looking i am going to draw one tile. what are my chances of drawing g?

On a architect's drawing of a house, 1 inche representa 1.5

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective