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{"name": "Question 8 Blob sequences", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": [], "name": "Question 8 Blob sequences", "tags": [], "preamble": {"css": "", "js": ""}, "advice": "<p>a) <code>blob</code> is defined as a sequence going backwards from $2$ to $-2$ by a step size of $2$.&nbsp;</p>\n<p>b) <code>splat</code> is defined as a sequence going backwards from $2$ to $-2$ by a step size of $0.5$.</p>", "rulesets": {}, "parts": [{"displayColumns": 0, "prompt": "<p>What is the value of <code>blob</code>?</p>", "matrix": [0, 0, "1", 0], "shuffleChoices": false, "variableReplacements": [], "choices": ["<p>-2 -1 0 1 2</p>", "<p>-2 0 2</p>", "<p>2 0 -2</p>", "<p>2 1 0 -1 -2</p>"], "variableReplacementStrategy": "originalfirst", "maxMarks": "1", "distractors": ["", "", "", ""], "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "1_n_2", "displayType": "radiogroup", "minMarks": 0}, {"displayColumns": 0, "prompt": "<p>What is the value of <code>splat</code>?</p>", "matrix": [0, 0, "1", "0"], "shuffleChoices": false, "variableReplacements": [], "choices": ["<p>2 1 0 -1 -2</p>", "<p>0.5 1 1.5 2</p>", "<p><span>2 1.5 1 0.5 0 -0.5 -1 -1.5 -2</span></p>", "<p>-2 -1.5 -1 -0.5 0 0.5 1 1.5 2</p>"], "variableReplacementStrategy": "originalfirst", "maxMarks": "1", "distractors": ["", "", "", ""], "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "1_n_2", "displayType": "radiogroup", "minMarks": 0}], "extensions": [], "statement": "<pre>&gt; blob = seq(2,-2, by=-2)<br/>&gt; splat = seq(2,-2, by=-0.5)</pre>", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "variables": {}, "metadata": {"description": "", "licence": "Creative Commons Attribution 4.0 International"}, "type": "question", "showQuestionGroupNames": false, "question_groups": [{"name": "", "pickingStrategy": "all-ordered", "pickQuestions": 0, "questions": []}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Amy Chadwick", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/505/"}]}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Amy Chadwick", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/505/"}]}