exam Maths Puzzle Numerical Ability

express as a single logarithm

5logN-3logN^4 (the last part meens exponent 4)

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exam Other Question

Solve by using inequality

Ronald wants to sell his car through a broker who charges a commission of 10% of the selling price. Ronald still owes $11,025 on the car. Ronald must In the Senior Class, one-fifth of the students are enrolled in mathematics. Find the number of students in the senior class if 87 are enrolled in mathematics.