exam Maths Puzzle Numerical Ability

How do you simplify a^6b^-5/a^-2b^7?

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exam Other Question

Jasmine says that there are 362,880 distinguishable permutations of the letters in the word TEXTBOOKS. Do you agree? Justify your answer. Find the surface area od a cylinder with a height of 25 inches and a radius of 8 inches. Round to the nearest tentth.