exam Maths Puzzle Numerical Ability

1.) Factor a^2 + 4ab � 45b^2 on your paper. Which one of these is a factor of the trinomial?

2.) x^2 + 14x + 49

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exam Other Question

Sarah wants her $9000 GIC to double in value in nine years. What annual rate of interest is required for her to reach her goal. Assume interest is compounded annually. How many ways can the letters A,B,C,D,E, and F be arranged in a row 4 at a time if neither A nor C can be first or third and D cannot be the fourth? Repetition is permitted.