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| comment | | "parent_author":"",<br>"parent_permlink":"steemit",<br>"author":"si118yt118si",<br>"permlink":"3-something-ways-show-n-1-c2-nc2-nc1",<br>"title":"3.something ways: Show (n+1)C2 = nC2 + nC1",<br>"body":"<html>\n<p><iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/hKaR2TUyS8A\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen><\/iframe><\/p>\n<\/html>",<br>"json_metadata":" \"tags\":[\"steemit\",<br>\"steemstem\",<br>\"steemit-education\",<br>\"knowledge\",<br>\"steemiteducation\" ,<br>\"image\":[\"https:\/\/img.youtube.com\/vi\/hKaR2TUyS8A\/0.jpg\" ,<br>\"links\":[\"https:\/\/www.youtube.com\/embed\/hKaR2TUyS8A\" ,<br>\"app\":\"steemit\/0.1\",<br>\"format\":\"html\" " |
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