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  1. (.58 x .58 x .58 - .42 x .42 x .42 - 3 x .58 x .42 x .16) = ?
    1. 0.004096
    2. 1.3976
    3. 0.16
    4. 1
Correct Option: A

Given Expression = (.53)3 - (.42)3- 3 x .58 x .42 x (.58-.42)
= a3-b3 -3ab(a - b)
= (a - b)3

(where a = .58 and b=.42)
= (.58 - .42 )3
= .16 x .16 x .16
= 0.004096


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