[{"id":158508,"question":"If u = xi + yj, then|u|","choices":[{"text":"x<sup>2</sup> + y<sup>2</sup>","value":"A"},{"text":"(x<sup>2</sup> +y<sup>2</sup>)<sup>2</sup>","value":"B"},{"text":"x<sup>2</sup>-y<sup>2</sup>","value":"C"},{"text":"√(x<sup>2</sup>+y<sup>2</sup>)","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":12502,"question":"If a,b = 0 then","choices":[{"text":"a |b","value":"A"},{"text":"a||b","value":"B"},{"text":"a = b","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":1}]