exam Maths Puzzle Numerical Ability

What is the square root of 20 over the square root of 15 in a simplified expression?

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exam Other Question

The edge of a 4-meter long ladder is 3.5 meters from the base of a building. Will the top of the ladder reach a window that is 3.8 meters from the ground? Can you also explain it? Create a real-life situation that fits into the equation (x+4)(x-7) = 0 and express the situation as the same equation.