exam Maths Puzzle Numerical Ability

simplify each expression
1. 15(x^4y^3)^4 divided by 21(x^5y)^2
2. 8^0
3. 12 divided by (2x)^0
4. 1 divided by 5^-3

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exam Other Question

determine how much you need to put away monthly until the age of retirement to have between 1 and 5 million, assuming a rate of return of 3, 6, 9, and 12 percent pa compounded mont The US population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the United State