19 Determine whether each of these arguments is valid If an argument is correct, what rule of inference is being used If it is not, what logical error occurs a) If n is a real number such that n 1, then n 1 Suppose that n 1 Then n 1 b) If n is a real number with n 3, then n2 9 Suppose that n3 9 Then n 53 c) If n is a real number with n 2, then n 4 Suppose that n 1 if and only if 2 1 19 Determine whether each of these arguments is valid If an argument is correct, what rule of inference is being used If it is not, what logical error occurs a) If n is a real number such that n 1, then n 1 Suppose that n 1 Then n 1 b) If n is a real number with n 3, then n2 9 Suppose that n3 9 Then n 53 c) If n is a real number with n 2, then n 4 Suppose that n 1 if and only if 2 1

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19  Determine whether each of these arguments is valid  If an argument is correct, what rule of inference is being used  If it is not, what logical error occurs  a) If n is a real number such that n   1, then n    1  Suppose that n   1  Then n  1  b) If n is a real number with n   3, then n2  9  Suppose that n3 9  Then n 53  c) If n is a real number with n   2, then n    4  Suppose that n 1 if and only if 2   1  19  Determine whether each of these arguments is valid  If an argument is correct, what rule of inference is being used  If it is not, what logical error occurs  a) If n is a real number such that n   1, then n    1  Suppose that n   1  Then n  1  b) If n is a real number with n   3, then n2  9  Suppose that n3 9  Then n 53  c) If n is a real number with n   2, then n    4  Suppose that n 1 if and only if 2   1

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19. Determine whether each of these arguments is valid. If an argument is correct, what rule of inference is being used? If it is not,

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