98271 – We Solve Problems

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On a plane there is a square, and invisible ink is dotted at a point P. A person with special glasses can see the spot. If we draw a straight line, then the person will answer the question of on which side of the line does P lie $($ if P lies on the line, then he says that P lies on the line $)$.
What is the smallest number of such questions you need to ask to find out if the point P is inside the square?

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