Number Game

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Across
  1. 1. An Indian school teacher showed that ____ is reached in the end as one repeatedly subtracts the highest and lowest numbers that can be constructed from a set of four digits that are not all identical.
  2. 3. Nostradamus predicted a Huge Naval War, in the year ____
  3. 5. Give any Rare number of 2 digit (If R is a positive integer and R1 is the integer obtained from R by writing its decimal digits in reverse order, then if R + R1 and R - R1 both are perfect square then R is termed as Rare Number.)
  4. 6. How many numbers from 57 to 5285 (both inclusive) have digit 5 in them
  5. 9. give first 7 digits of Archimedes constant
  6. 11. The number of the beast from the Book of Revelation
  7. 13. This number represents the number of constellations in night sky, this number also represents the number of keys in a standard piano.
  8. 14. This number represents the distance between Earth and Moon in kilometers
  9. 15. Factorial of a single digit prime and is a Highly Composite Number (A highly composite number is a positive integer with more divisors than any smaller positive integer has. )
  10. 16. The smallest base 10 cyclic number
  11. 18. This number is regarded as sacred in the Muslim Abjad numerology
  12. 19. Give any perfect number between 400 - 600
Down
  1. 1. Maximum limit of characters in a WhatsApp message(Think about Computer Science)
  2. 2. Length of full marathon course, hitchhikers guide to the galaxy reference
  3. 4. Speed of light in meter per seconds
  4. 7. By what minimum no. should 396 be multiplied to get a perfect square. What is the square root of the perfect square thus obtained
  5. 8. The ratio of consecutive terms in a Fibonacci sequence approach to a very special number. What are the first six digits of that constant (excluding the decimal point i.e if answer is “x.yza” then, write ‘xyza’)
  6. 10. Philosophiæ Naturalis Principia Mathematica by Newton was first published in year____
  7. 12. This number is the average equatorial radius of Earth in kilometers
  8. 17. These many fortnights make up 14495040 minutes