Directions: Read each problem carefully. Fill in the Venn diagram with data as your guide. Answer the questions accurately PROBLEM 1: Yanna's birthday party was a lively one. 30 guests were invited. She even had dancing and singing contests. 19 joined the dance contest, 16 joined the singing contest, and 9 danced and sing. a. How many guests are being surveyed on this data? b. How many guests joined the dance contest? c. How many guests joined the singing contest? d. How many guests joined both the dance and the singing contest?​