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4. Multiplicative Inverse of (-3)^(-2)
=(-3)^(2)
= 9
Therefore, the Multiplicative inverse of (-3)^(-2) is (-3)^2 or 9.
5. Area of Rectangle = 5xy*3pr
Area of Rectangle = 15pxyr
Therefore, The answer is "Option D"
6. If 'A' can finish a work in 'n' days, then part of work finished in 1 day is;
The part of work finished in 1 day = Total work/Time taken by A to complete work
The part of work finished in 1 day = 1/n
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