exam Maths Puzzle Numerical Ability

What is the answer for (0+i^2)*(0+i^2)

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exam Other Question

Stan invested $17,000, part at 18% and part at 4%. If the total interest at the end of the year is $1,380, how much did he invest at each rate? Write the decimal number 0.394 as a fraction and simplify.( show your work)
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