A^2 - B^2 = (A+B)*(A-B)
try using this in this question.
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Source: Beat The GMAT — Problem Solving |
Using the formula Durgesh used,
the problem reduces to : (2000 * 2)/(200*2) = 10
The answer is 10.
the problem reduces to : (2000 * 2)/(200*2) = 10
The answer is 10.
