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If the some of a number and its reciprocal be 2 then number is = ?
Answer & Solution
Correct Answer:
Option
B
$$\eqalign{
& x + \frac{1}{x} = 2 \cr
& {x^2} + 1 = 2x \cr
& {x^2} - 2x + 1 = 0 \cr
& {\left( {x - 1} \right)^2} = 0 \cr
& {\text{Then, }}x{\text{ = 1}} \cr} $$
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