// Numbas version: exam_results_page_options
{"name": "Ask for the sum of the elements the student picked", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"type": "question", "variables": {"numbers": {"name": "numbers", "description": "<p>Numbers shown to the student to pick from</p>", "templateType": "anything", "definition": "shuffle(1..10)[0..4]", "group": "Ungrouped variables"}, "total": {"name": "total", "description": "", "templateType": "anything", "definition": "sum(chosen_numbers)", "group": "Ungrouped variables"}, "chosen": {"name": "chosen", "description": "<p>Element i says whether option i has been ticked</p>", "templateType": "anything", "definition": "[true,true,false,false]", "group": "Ungrouped variables"}, "chosen_numbers": {"name": "chosen_numbers", "description": "<p>The values&nbsp;of the&nbsp;numbers ticked by the student</p>", "templateType": "anything", "definition": "map(\n  numbers[n],\n  n,\n  filter(chosen[j],j,0..3)  // filter out indices which weren't picked\n)", "group": "Ungrouped variables"}}, "variable_groups": [], "name": "Ask for the sum of the elements the student picked", "metadata": {"licence": "Creative Commons Attribution 4.0 International", "description": "<p>Student is given a few numbers to choose from. They must pick at least two, and then give the sum of their chosen numbers.</p>"}, "variablesTest": {"maxRuns": 100, "condition": ""}, "parts": [{"showFeedbackIcon": true, "type": "gapfill", "scripts": {}, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "showCorrectAnswer": true, "gaps": [{"displayType": "checkbox", "distractors": ["", "", "", ""], "scripts": {}, "variableReplacementStrategy": "originalfirst", "choices": ["<p>{numbers[0]}</p>", "<p>{numbers[1]}</p>", "<p>{numbers[2]}</p>", "<p>{numbers[3]}</p>"], "minAnswers": "2", "type": "m_n_2", "showCorrectAnswer": false, "matrix": ["1", "1", "1", "1"], "showFeedbackIcon": true, "minMarks": 0, "shuffleChoices": false, "warningType": "none", "maxAnswers": "2", "maxMarks": 0, "displayColumns": 0, "variableReplacements": [], "marks": 0}], "prompt": "<p>Pick at least two numbers</p>\n<p>[[0]]</p>", "marks": 0}, {"showFeedbackIcon": true, "type": "gapfill", "scripts": {}, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "showCorrectAnswer": true, "gaps": [{"variableReplacements": [{"part": "p0g0", "must_go_first": false, "variable": "chosen"}], "scripts": {}, "variableReplacementStrategy": "alwaysreplace", "mustBeReducedPC": 0, "showCorrectAnswer": true, "type": "numberentry", "mustBeReduced": false, "maxValue": "total", "showFeedbackIcon": true, "correctAnswerStyle": "plain", "allowFractions": false, "notationStyles": ["plain", "en", "si-en"], "minValue": "total", "correctAnswerFraction": false, "marks": 1}], "prompt": "<p>Write the sum of the numbers you chose.</p>\n<p>[[0]]</p>", "marks": 0}], "functions": {}, "tags": ["demo"], "extensions": [], "preamble": {"css": "", "js": ""}, "ungrouped_variables": ["numbers", "chosen", "chosen_numbers", "total"], "statement": "", "advice": "", "rulesets": {}, "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}