How many different ways can a basketball team of 5 players be selected from a group of 10 players?
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What is the sum of vector A, with magnitude 3 and angle 30°, and vector B, with magnitude 5 and angle 60°?
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What is the equation of an ellipse with the center at (h, k), horizontal major axis length of 2a, and vertical minor axis length of 2b? (Consider the standard form)