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1. The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y?
- A. 2/3
- B. 2/3
- C. 2/3
- D. 2/3
Answer: Option D
Explanation:
Hints : xy = 2 ( x + y)
xy/ x + y = 2
x + y/xy = 1/2
1/x + 1/y = 1/2
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