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  1. If x = – 1, then the value of
    1
    		 +
    1
    		 +
    1
    		 +
    1
    		 +
    1
    		 +
    1
    		 +
    1
    		 - 1 is
    x99x98x97x96x95x94x

    1. 1
    2. 0
    3. –2
    4. –1
Correct Option: C

On putting x = -1

1
 =
1
 = -1
x99(-1)99

1
 =
1
 = 1
x98(-1)98

1
 =
1
 = -1 and so on.
x97(-1)97

∴ Expression = – 1 + 1 – 1 + 1 – 1 + 1 – 1 – 1 = – 2


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