41:null 42:["$","title",null,{"children":"Combinations | Charles Redmond | Observable"}] 48:[] 46:{"id":"7ca99961ea3a2165","slug":"combinations","title":"Combinations","thumbnail":"879c997bcf816423c52bb0e0922aae355d9f9b060f196333325351c60e924df2","access_level":"public","create_time":"$D2020-09-23T20:21:59.909Z","update_time":"$D2020-09-24T20:46:33.502Z","view_time":null,"first_public_time":"$D2020-09-23T20:52:59.040Z","has_unpublished_edits":null,"fork":{"id":"d303a940b7dd7135","slug":"permutations","title":"Permutations","owner":{"id":"66151b62b45d9fca","login":"credmond","name":"Charles Redmond"}},"stars":1,"starred":false,"owner":{"type":"team","id":"66151b62b45d9fca","login":"credmond","name":"Charles Redmond","avatar_url":"https://avatars-next.observableusercontent.com/50425ed9f407a7b47d1c471a09963f335e0652ab9acc237869e2d7949fb04a77","tier":"starter_2024","bio":"","following":false},"version":389,"publish_version":389,"role":null,"authored":false,"authors":[{"type":"individual","id":"37a987477e8b6db3","login":"credmond","name":"Charles Redmond","avatar_url":"https://avatars-next.observableusercontent.com/50425ed9f407a7b47d1c471a09963f335e0652ab9acc237869e2d7949fb04a77","tier":null,"bio":"","following":false}],"members":[{"type":"individual","id":"37a987477e8b6db3","login":"credmond","name":"Charles Redmond","avatar_url":"https://avatars-next.observableusercontent.com/50425ed9f407a7b47d1c471a09963f335e0652ab9acc237869e2d7949fb04a77","tier":null,"role":"editor"}],"comments":[{"id":"00c217027b2c7a80","reply_to_id":null,"content":"math. factorial (5)/(math.factorial (2)*math.factorial (3)\n\nmath.combinations(5,3)","create_time":"$D2020-10-01T18:58:23.237Z","update_time":"$D2020-10-01T19:00:03.068Z","resolved":false,"user":{"type":"individual","id":"916ba9f6300ce2a5","login":"rmaj","name":"Robert Majczyk","avatar_url":"https://avatars-next.observableusercontent.com/ef52ffba9712dc9eb73c2f53481ef1d7f1010c488fbbba0cf8dc12564e86f110","tier":null}}],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":17,"collection":{"id":"27b20b49e953b79b","slug":"probability-and-statistics","title":"Probability and Statistics","owner":{"id":"66151b62b45d9fca","login":"credmond","name":"Charles Redmond"}},"type":"notebook","body":{"titling":"auto","title":"Combinations","cells":[{"id":0,"value":"html`

Combinations

`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":40,"value":"{\n b\n const svg = html`` \n const container = d3.select(svg)\n container.attr(\"style\",\"width: 600px; height: 180px;\")\n \n const drag = d3.drag().on(\"drag\",function(){\n const target = d3.select(this)\n const x = d3.event.x\n const y = d3.event.y\n target.attr(\"x\",x).attr(\"y\",y)\n })\n \n container.append(\"text\")\n .text(\"Tosin\")\n .attr(\"y\",20)\n .call(drag)\n \n container.append(\"text\")\n .text(\"Mahesh\")\n .attr(\"y\",40)\n .call(drag)\n \n container.append(\"text\")\n .text(\"Rob\")\n .attr(\"y\",60)\n .call(drag)\n \n container.append(\"text\")\n .text(\"Chris\")\n .attr(\"y\",80)\n .call(drag)\n \n container.append(\"text\")\n .text(\"Chad\")\n .attr(\"y\",100)\n .call(drag)\n \n\n \n return svg\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":286,"value":"viewof b = button({value:\"reset\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":334,"value":"html`

Formula for Combination

Exercise 1

Exercise 2

Exercise 3

Exercise 4

Libraries

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