exam Maths Puzzle Numerical Ability

What is the least positive number that you can divide by 7 and get a remainder of 4, divide by 8 and get a remainder of 5, and divide by 9 and get a remainder of 6?

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exam Other Question

Thomas is going to make an open-tpo box by cutting equal suqres from the four corners of an 11 inch by 14 inch sheet of cardboard and folding up the sides. If the base is to be 80 square inches, then what size suqare should be cut from each corner? In what sense do exponentials and radicals behave the same way?