IMF 2021 SET B

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Across
  1. 2. Pi consists of how many digits?
  2. 4. Circles sharing the same centre are called
  3. 5. In which number system, there is no symbol for zero?
  4. 7. _____ number is a positive integer that is equal to the sum of its proper divisors.
  5. 9. The value of e = 2.71828… is also known as_________ number?
  6. 10. All counting numbers, together with their negatives and zeros constitute the set of __________.
  7. 13. Line perpendicular to the tangent line to the curve is called _________.
  8. 15. What is fear of numbers called?
  9. 20. A vertical pole PO is standing at the centre 0 of a square ABCD. If AC subtends an ∠ 90° at the top P of the pole, then the angle subtended by a side of the square at P is ____ degrees.
  10. 21. Sum of the dots on opposite faces of a dice is always _____.
  11. 22. Set of outputs of a function is called _____
  12. 23. In ILATE, ‘A’ stands for _______.
  13. 24. A triangle with all the sides of different length
  14. 26. Any number in the form of 2p – 1, where p is a prime is known as__________ primes
  15. 28. The point of intersection of perpendiculars drawn from the vertices on the opposite sides of a triangle is called ____.
  16. 29. What is the name of that figure which is a polygon but has four unequal sides?
Down
  1. 1. A diagram is the best to represent a subset.
  2. 2. If P(A)=0, where P denotes probability of A, then A is called________ event.
  3. 3. ____ number is a positive integer that is equal to the sum of its proper divisors.
  4. 6. How many real roots does the equation x2 +2x+5=0 have?
  5. 8. The points (–a, – b), (0, 0), (a, b) and (a2, ab) are
  6. 11. A set containing a single element is called a _____ set
  7. 12. Any two consecutive primes which differ by 2 are known as_________ primes.
  8. 14. Differentiation of a _____ function is zero.
  9. 16. What is the shape where its angles add up to 720 degrees?
  10. 17. If the direction ratios of two lines are proportional then the lines are
  11. 18. Natural numbers are a subset of ______ numbers.
  12. 19. A system of notation that uses the base 3 instead of base 10 is called_______ system.
  13. 25. A number which is expressed as a + ib, where a and b are real are called_________number
  14. 27. 7,13, 19, 25, ……… is a ___________ progression.