// Numbas version: finer_feedback_settings
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Otherwise it is not possible to multiply them.</p>", "rulesets": {}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"B": {"name": "B", "group": "Ungrouped variables", "definition": "matrix([random(-5..5)],[random(-5..5)])", "description": "", "templateType": "anything", "can_override": false}, "C": {"name": "C", "group": "Ungrouped variables", "definition": "matrix([random(-5..5),random(-5..5)],[random(-5..5),random(-5..5)],[random(-5..5),random(-5..5)])", "description": "", "templateType": "anything", "can_override": false}, "A": {"name": "A", "group": "Ungrouped variables", "definition": "matrix([random(-5..5),random(-5..5)],[random(-5..5),random(-5..5)])", "description": "", "templateType": "anything", "can_override": false}, "D": {"name": "D", "group": "Ungrouped variables", "definition": "matrix([random(-5..5),random(-5..5),random(-5..5)])", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["A", "B", "C", "D"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "1_n_2", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>$AB$</p>", "minMarks": 0, "maxMarks": 0, "shuffleChoices": false, "displayType": "radiogroup", "displayColumns": 0, "showCellAnswerState": true, "choices": ["Yes", "No"], "matrix": ["1", 0], "distractors": ["Correct, $A$ has two columns and $B$ has two rows.", "Incorrect, $A$ has two columns and $B$ has two rows."]}, {"type": "1_n_2", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, 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"adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>$BC$</p>", "minMarks": 0, "maxMarks": 0, "shuffleChoices": false, "displayType": "radiogroup", "displayColumns": 0, "showCellAnswerState": true, "choices": ["Yes", "No"], "matrix": [0, "1"], "distractors": ["Incorrect, $B$ has one column but $C$ has three rows.", "Correct, $B$ has one column but $C$ has three rows."]}, {"type": "1_n_2", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>$CB$</p>", "minMarks": 0, "maxMarks": 0, "shuffleChoices": false, "displayType": "radiogroup", "displayColumns": 0, "showCellAnswerState": true, "choices": ["Yes", "No"], "matrix": ["1", 0], 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