Q. The sum of two positive integers is 80 & difference between them is 20. Then what is difference of squares of those numbers ?
A) 1600
B) 1400
C) 2000
D) 1800
✔ Correct Answer: 1600
Exam Insight
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A) 1600
B) 1400
C) 2000
D) 1800
✔ Correct Answer: 1600
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