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Q1: 1397 x 1397 = ?

A 1951609

B None of these

C 2031719

D 18362619

E 1981709

ANS:A - 1951609

1397 x 1397	= (1397)²
	= (1400 - 3)²
	= (1400)² + (3)² - (2 x 1400 x 3)
	= 1960000 + 9 - 8400
	= 1960009 - 8400
	= 1951609.

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