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Let f(x)=[x] where [x] denotes the grea...

Let `f(x)=[x]` where [x] denotes the greatest integer in x. Which one of the following is correct ?

A

both domain and range of f(x) are sets of real numbers,

B

domain of f(x) is the set of real numbers and its range is the set of integers,

C

both domain and range of f(x) are sets of integers,

D

none of these

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The correct Answer is:
B
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