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ECAT - Practice Test - Maths - Number Systems and Sets Quiz

Attempt 10 MCQs on ECAT - Practice Test - Maths - Number Systems and Sets | Quiz 4

31. What is the value of i²?



32. If A and B are disjoint sets, then A ∩ B = ?



33. The range of the function f(x) = x² for real x is:



34. Which number is a multiple of all integers?



35. The number 0 is a:



36. If A = {x | x is an even prime number}, then A = ?



37. What is the conjugate of 4?



38. A function f: A → B is bijective if it is:



39. The set of all positive integers is denoted by:



40. What is the sum of all elements in the set {1,2,3,4}?



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