[{"id": 1, "type": "multiple_choice", "options": ["x = 10", "x = 2", "x = 1", "x = 0"], "question": "Solve for x: 10x = 10", "correct_answer": "x = 1"}, {"id": 2, "type": "multiple_choice", "options": ["2:10", "10:2", "7:7", "10:10"], "question": "If the ratio is 2:2, what is the equivalent ratio when multiplied by 5?", "correct_answer": "10:10"}, {"id": 3, "type": "true_false", "question": "The square root of 144 is 12.", "correct_answer": "True"}, {"id": 4, "type": "multiple_choice", "options": ["13 square units", "26 square units", "36 square units", "45 square units"], "question": "What is the area of a rectangle with length 9 and width 4?", "correct_answer": "36 square units"}, {"id": 5, "type": "short_answer", "question": "What is 30% of 200?", "correct_answer": "60"}]