(69842 x 69842 - 30158 x 30158) / (69842 - 30158) = ?
Options
A) 100000	B) 69842	C) 39684	D) 30158	E) none

Rationale: answer given expression = [ ( 69842 ) 2 - ( 30158 ) 2 ] / [ ( 69842 - 30158 ) ] = [ ( 69842 - 30158 ) ( 69842 + 30158 ) ] / ( 60842 - 30158 ) = 100000 correct option : a
Answer: A