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HW2.9. Construct mathematical proofs dragging and dropping blocks

Let $A, B,$ and $C$ be propositions. Prove that $(A \land C) \lor (A \land B) \rightarrow A $

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Homework 2

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Total points:	0/24
Score:	0%

Question HW2.9

Value:	3
All variants: Open (current)
Total points:	— /3
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Question

QID:

demo/annotated/mathProof

Title:

Construct mathematical proofs dragging and dropping blocks

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Started at:

2026-09-19 07:54:48 (CDT)

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{
  "proof-by-cases": [
    {
      "tag": "1",
      "uuid": "ae61fbb3-632f-4f84-bfed-3c4cb04342b4",
      "final": false,
      "index": 0,
      "indent": null,
      "depends": [],
      "ranking": -1,
      "group_info": {
        "tag": null,
        "depends": null
      },
      "inner_html": " Proof by Cases:",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    },
    {
      "tag": "2",
      "uuid": "b71d3aea-bd82-45e1-9db9-16c0c7e0b24d",
      "final": false,
      "index": 1,
      "indent": null,
      "depends": [],
      "ranking": -1,
      "group_info": {
        "tag": "g1",
        "depends": [
          "1"
        ]
      },
      "inner_html": " Case $A \\land C$: ",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    },
    {
      "tag": "3",
      "uuid": "cfeb829a-d660-40b0-af6b-7f3f21d3de68",
      "final": false,
      "index": 2,
      "indent": null,
      "depends": [
        "2"
      ],
      "ranking": -1,
      "group_info": {
        "tag": "g1",
        "depends": [
          "1"
        ]
      },
      "inner_html": " Since $A \\land C$ is true, we know $A$ is true.",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    },
    {
      "tag": "4",
      "uuid": "e962fb95-9738-4f0f-9913-e1c1cf5d5e74",
      "final": false,
      "index": 3,
      "indent": null,
      "depends": [],
      "ranking": -1,
      "group_info": {
        "tag": "g2",
        "depends": [
          "1"
        ]
      },
      "inner_html": " Case $A \\land B$: ",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    },
    {
      "tag": "5",
      "uuid": "ff99e061-4044-432f-97bb-623de147af68",
      "final": false,
      "index": 4,
      "indent": null,
      "depends": [
        "4"
      ],
      "ranking": -1,
      "group_info": {
        "tag": "g2",
        "depends": [
          "1"
        ]
      },
      "inner_html": " Since $A \\land B$ is true, we know $A$ is true.",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    },
    {
      "tag": "6",
      "uuid": "de36e730-85c9-4da3-a612-ac004d4512bb",
      "final": false,
      "index": 5,
      "indent": null,
      "depends": [
        "g1",
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      "ranking": -1,
      "group_info": {
        "tag": null,
        "depends": null
      },
      "inner_html": "This completes the proof.",
      "distractor_for": null,
      "initially_placed": false,
      "ordering_feedback": null,
      "distractor_feedback": null
    }
  ]
}

Assessment instance

Assessment:

homework/extraCredit