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In each of the questions 20-21 , there are two quantities : Quantity A and Quantity B. You are to compare those quantities . Quantities A 5 (a-7) Quantity B 5a - 7

A. Quantity A is greater
B. Quantity B is greater
C. Both quantities are equal
D. It is impossible to determine
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সঠিক উত্তরঃ A. Quantity A is greater
Explanation: