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Question

When a particular number is added to its own reciprocal, the resulting sum is 2. Find the number.

A
2
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B
1
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C
12
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D
1
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E
2
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Solution

The correct option is D 1
Let the number be x
As per the problem,
x+1x=2
x2+1x=2
x2+1=2x
x22x+1=0
x2xx+1=0
x(x1)1(x1)=0
(x1)(x1)=0
x1=0
x=1

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