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Question

On simplification of below we get: (2.644)2 - (2.356)2 0.288

Options:
A .  1
B .  4
C .  5
D .  6
E .  None of these
Answer: Option C
 -   Given expression = (2.644)2 - (2.356)2 2.644 - 2.356 = a2 - b2 a - b  = (a + b) = (2.644 + 2.356) = 5  

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