Aptitude | Arithmetic Aptitude 2 | Question 1

512 x 512 + 488 x 488 = ?
(A) 512438
(B) 502568
(C) 500288
(D) 514318


Answer: (C)

Explanation:

Let X=500 & Y=12
Now, (X + Y)2 + (X – Y)2 = 2 ( X2 + Y2 )
		        = 2 ( 5002 + 122 )
 			= 2 ( 250000 + 144 )
 			= 2 * 250144
 			= 500288


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