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The domain of the function f(x) = 10 ] x [ 3 ] x [ 1 2   is (where [x] denotes the greatest integer less or equal to x)

1. (–  , –3]  (5,  )
2. (–  , –2)  [6,  )
3. (–  , –2)  (5,  )
4. (–  , –3]  [6,  )

Correct answer: (–  , –2)  [6,  )

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