With reference to the demographic profile of India, which of the following statements is/are correct ? 1. According to 2011 census, 82% of Indians are literate. 2. Sex ratio of the population has increased during the period 2001- 2011. 3. The gender gap in literacy has not declined during the period 2001-2011. Which of the statements given above is/ are correct ?1 and 2 2 only1 and 33 only