exam Maths Puzzle Numerical Ability

-25 to the -3/2 power


I got -1/1953 is this correct?

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Please help

Use the Ln key to express each number as a power. Then use the rules of logarithms to find the answers.

(45,332 * 10^5)(33,654 * 10^-4)

DIVIDED BY

93,153
Lauren wants to mix 5 liters of 7% milk with skim-milk (0% fat) to profud a mixture of 2 46/47% milk. How much skim-milk should Lauren add?