106 x 106 – 94 x 94 = ?

Question:
106 x 106 – 94 x 94 = ?

[A].

2400

[B].

2000

[C].

1904

[D].

1906

Answer: Option A

Explanation:

106 x 106 – 94 x 94	= (106)2 – (94)2
	= (106 + 94)(106 – 94)    [Ref: (a2 – b2) = (a + b)(a – b)]
	= (200 x 12)
	= 2400.