If I < x < I +1, Find [-x], where I is an integr

-I

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-I+1

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-I-1

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I-1

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Solution

The correct option is C
-I-1

[x] is the greatest integer function
If I < x < I +1 means x is between I and I +1.
$\Rightarrow$ -I -1 < -x < -I, -x will lie between (-I-1) and -I
$\Rightarrow$ [-x] = -I - 1

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