1. With reference to the use of betel leaves and areca nuts, consider the following statements :

  1. There is no reference to betel leaf in Charak Samhita and Sushruta Samhita.
  2. Kalidasa's Raghuvamsha associates the practice of betel leaf chewing with South India.
  3. Pattupattu mentions fields of areca plants.

Which of the statements given above are correct?


1. How many terms of the series 1+3+5+ 7+ ... amount to a sum equal to 12345678987654321?

  


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