exam Maths Puzzle Numerical Ability

Simplify

(-6x^2y^4z^9)^z
(------------)
( 3x^6y^4z^3)

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exam Other Question

I have won 12,000.00 each yr for 10 yrs. At 12% interest how much has to be invested to have money for the payout? How do I solve for the absolute value inequality:

x > 6