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  1. 13.065 x 13.065 - 3.065 x 3.065 =?
    1. 161.3
    2. 159.5
    3. 141.6
    4. 100
Correct Option: A

Given expression =(13.065)2-(3.065)2
=(13.065 + 3.065) x (13.065 - 3.065)
=16.13 x 10
= 161.3


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