// Numbas version: finer_feedback_settings
{"name": "00a - Engineering Arithmetic: 003", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"metadata": {"description": "<p>Questions based on Exercise Intro(a) from the Textbook \"Engineering Maths through Applications\" by Kuldeep Singh.</p><p>Intended for use as Homework Exercises.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "tags": [], "statement": "<p>Evaluate the following:</p>", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "variables": {"c3": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{c1}-{c2}", "name": "c3"}, "c2a": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{c2}*(-1)", "name": "c2a"}, "d2": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(-5 .. -25#1)", "name": "d2"}, "a1": {"description": "<p>a1</p>", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(3 .. 16#1)", "name": "a1"}, "a3": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{a1}-{a2}", "name": "a3"}, "b1": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(-1 .. -10#1)", "name": "b1"}, "c1": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(-3 .. -10#1)", "name": "c1"}, "a2": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(11 .. 19#1)", "name": "a2"}, "b2": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(1 .. 9#1)", "name": "b2"}, "d3": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{d1}+{d2}", "name": "d3"}, "c2": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(-3 .. -9#1)", "name": "c2"}, "b3": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{b1}+{b2}", "name": "b3"}, "d1": {"description": "", "group": "Ungrouped variables", "templateType": "randrange", "definition": "random(-11 .. -19#1)", "name": "d1"}, "e2": {"description": "", "group": "Ungrouped variables", "templateType": "anything", "definition": "{d1}*(-1)", "name": "e2"}}, "advice": "<p>a)&nbsp; &nbsp;$\\var{a1}-\\var{a2}=\\var{a3}$</p>\n<p>b)&nbsp; &nbsp;$\\var{b1}+\\var{b2}=\\var{b3}$</p>\n<p>c)&nbsp; &nbsp;$-(-)$&nbsp; &nbsp;gives&nbsp; &nbsp;$+$&nbsp; &nbsp;so:&nbsp; &nbsp;$\\var{c1}-(\\var{c2})=\\var{c1}+(\\var{c2a})=\\var{c3}$</p>\n<p>d)&nbsp; &nbsp;$+(-)$&nbsp; &nbsp;gives&nbsp; &nbsp;$-$&nbsp; &nbsp;so:&nbsp; $\\var{d1}+(\\var{d2})=\\var{d1}\\var{d2}=\\var{d3}$</p>\n<p>e)&nbsp; &nbsp;As previously&nbsp; &nbsp;$-(-)$&nbsp; &nbsp;gives&nbsp; &nbsp;$+$&nbsp; &nbsp;so:&nbsp; &nbsp;$\\var{d1}-(\\var{d1})=\\var{d1}+\\var{e2}=0$</p>", "extensions": [], "name": "00a - Engineering Arithmetic: 003", "preamble": {"css": "", "js": ""}, "ungrouped_variables": ["a1", "a2", "a3", "b1", "b2", "b3", "c1", "c2", "c2a", "c3", "d1", "d2", "d3", "e2"], "functions": {}, "parts": [{"showFeedbackIcon": true, "variableReplacements": [], "sortAnswers": false, "type": "gapfill", "useCustomName": false, "gaps": [{"minValue": "{a1}-{a2}", "variableReplacements": [], "notationStyles": ["plain", "en", "si-en"], "allowFractions": false, "maxValue": "{a1}-{a2}", "mustBeReducedPC": 0, "showFractionHint": true, "showCorrectAnswer": true, "scripts": {}, "customName": "", "customMarkingAlgorithm": "", "showFeedbackIcon": true, "variableReplacementStrategy": "originalfirst", "mustBeReduced": false, "correctAnswerStyle": 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