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Aptitude
General Knowledge
Verbal Reasoning
Computer Science
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(489 + 375)2 - (489 - 375)2 =? (489 x 375)
144
864
2
4
None of these
Show Answer
Correct Answer:
4
Explanation:
Given Exp. =
(
a
+
b
)
2
- (
a
-
b
)
2
=
4
ab
= 4
ab
ab
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