Mathematics crossword quiz

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Across
  1. 4. Vedic math technique for rapid multiplication
  2. 5. Ancient Indian scrolls containing mathematical knowledge
  3. 6. Indian number system based on 2
  4. 8. Ancient Indian text on geometry and construction
  5. 10. The Indian number system based on 10
  6. 11. Indian mathematician who introduced zero as a number
Down
  1. 1. The concept of zero was first used in India around this century
  2. 2. The Indian system of counting using finger gestures
  3. 3. Indian mathematician who wrote "Aryabhatiya"
  4. 7. Famous Indian mathematician known for work on infinite series
  5. 9. The Indian place-value system was developed in this region
  6. 12. Indian mathematician who calculated pi to 3.1416