Maths crossword puzzle

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Across
  1. 2. , the probability of __________event is 1
  2. 7. , highest power of a variable in a polynomial
  3. 8. , Dividend=Divisor×_____+remainder
  4. 10. , the last term of a standard polynomial has variable with lowest__________
  5. 12. , another method to get HCF of two numbers
  6. 14. , an expression that consists of only a positive integer
  7. 16. , number of cards in one deck
  8. 18. , expression with power of variable non negative integer
  9. 19. , HCF in the last step of an equation in a=bq+r form that satisfies conditions of a division lemma
  10. 20. , ________event has P(e)+P(not e)=1
Down
  1. 1. , a zero of the polynomial x^2-13x-68
  2. 3. , probability of an event can be ________orequal to zero but less than one
  3. 4. , LCM of two prime numbers is
  4. 5. , product of two given numbers is __________multiple
  5. 6. , degree of zero polynomial is
  6. 9. , number of total outcomes when coin is tossed three times
  7. 11. , the probability of possible events is same is called _________likely
  8. 13. , HCF of two prime numbers is
  9. 15. , number of total outcomes when two die are rolled simultaneously
  10. 17. , possibility of _____event is zero