Exam Maths Puzzle Co-ordinate geometry

A does not live at numbers 1 or 17. F lives directly opposite B, K lives directly opposite N, and M lives directly opposite H. E does not live at numbers 5 or 7 but live directly o

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Exam Other Question

One person is wearing Black and White shoes as his pair. If he
is having 20 white and 20 Black shoes. What will be the less
number of time he have try to take his correct pair In a case of a quadratic equation, why are there two x-intercepts and one y-intercept ?