book Maths Puzzle Numerical Ability

Find the wquation of the ellipse that has the endpoints of its major axis at (2,-2) and (10,-2) and the endpoints of its minor axis at (6,0) and (6, -4).

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The question is: From a rectangular piece of cardboard having dimensions 20 inches x 30inches, aan open box is to be made by cutting out an identical square of area x2 from each co Suppose the sum of the 151st term and the 251st term of an arithmetic sequence is 10. Find the sum of the first 401 terms of the sequence. Provide 3 examples of such a sequence.