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  "body": "\n## Summary\n\nA combination with repetition is a selection of $k$ elements from a set in which the order does not matter and elements can repeat. Such selections are multisets of size $k$, and stars and bars counts them. The node [[combinations with repetition|0YEQG3VBYC]] gives the precise definition.\n",
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  "front": {
    "kind": "concept",
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    "name": "Combinations with repetition",
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      {
        "locator": "Counting multisets",
        "url": "https://en.wikipedia.org/wiki/Multiset"
      }
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    "tag": "0VQQCVG8WA"
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  "markdown": "https://math2.tamnd.com/node/0VQQCVG8WA.md",
  "msc": [
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  "name": "Combinations with repetition",
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  "source": "https://github.com/tamnd/math2/blob/main/nodes/0VQ/0VQQCVG8WA.md",
  "status": null,
  "tag": "0VQQCVG8WA",
  "uri": "m2://0VQQCVG8WA",
  "url": "https://math2.tamnd.com/wiki/combinations-with-repetition/",
  "writing": {
    "tag": "0VQQCVG8WA",
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    "next": [
      {
        "what": "an inventory row",
        "note": "the row of the inventory that the node accounts for",
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