1. In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements: 

  1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform.
  2. Sputnik V vaccine is manufactured using vector-based platform.
  3. COVAXIN is an inactivated pathogen-based vaccine.
    Which of the statements given above are correct? 

 

 


1. When ten persons shake hands with one another, in how many ways is it possible?


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