CTET Maths - Algebra

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56. Let G denoted the set of all n x n non-singular matrices with rational numbers as entries. Then under multiplication G is a/an

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57. Let A be the set of all non-singular matrices over real numbers and let * be the matrix multiplication operator. Then

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58. If a, b are positive integers, define a * b = a where ab = a (modulo 7), with this * operation, then inverse of 3 in group G (1, 2, 3, 4, 5, 6) is

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59. Which of the following is TRUE ?

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60. The set of all nth roots of unity under multiplication of complex numbers form a/an

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