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Q: .
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  • A. 15
  • B. 11
  • C. 19
  • D. 22
Correct Answer: Option C - Total number of dancers who are either Gymnasts or Singer but not both = 9 + 3 + 7 = 19
C. Total number of dancers who are either Gymnasts or Singer but not both = 9 + 3 + 7 = 19

Explanations:

Total number of dancers who are either Gymnasts or Singer but not both = 9 + 3 + 7 = 19