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  1. The sum and product of two numbers are 11 and 18 respectively. The sum of their reciprocals is
    1. 2
      11
    2. 11
      2
    3. 18
      11
    4. 11
      18
Correct Option: D

Let the numbers be x and y.
According to the question,
x + y = 11       ... (i)
xy = 18       ... (ii)
Dividing equation (i) by equation (ii)

x + y
 =
1
 +
1
 =
11
xyyx18


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