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  1. The difference of two number is 5 and the difference of their squares is 135. The sum of the number is ?
    1. 27
    2. 25
    3. 30
    4. 32
Correct Option: A

Let the number be a and b.
Then, (a + b) = (a2 -b2) / (a-b)
= 135/5
= 27


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