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  1. Tardigrade
  2. Question
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  4. Let A= beginpmatrix1+ i 1 - i 0 endpmatrix where i =√-1. Then, the number of elements in the set n ∈ 1,2, ldots, 100: A n = A is

Q. Let where . Then, the number of elements in the set is

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Solution:








total elements in the set is

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