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Return the probability that 2 or more people share the same birthday.\r\n\r\nThe return from the function should be a value between 0 and 1, inclusive.  It should also be rounded out to the 10 thousandth decimal point (4 after the decimal point).  There should be no trailing zeros included.\r\n","description_html":"\u003cp\u003eFirst off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into consideration, for simplicity.\u003c/p\u003e\u003cp\u003eThe basic question is given an input, a single integer representing the number of people in the room (X \u0026gt;= 1).  Return the probability that 2 or more people share the same birthday.\u003c/p\u003e\u003cp\u003eThe return from the function should be a value between 0 and 1, inclusive.  It should also be rounded out to the 10 thousandth decimal point (4 after the decimal point).  There should be no trailing zeros included.\u003c/p\u003e","function_template":"function y = bday_phenom(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 0;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 2;\r\ny_correct = 0.0027;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 5;\r\ny_correct = 0.0271;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 10;\r\ny_correct = 0.1169;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 20;\r\ny_correct = 0.4114;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 30;\r\ny_correct = 0.7063;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 50;\r\ny_correct = 0.9703;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 366;\r\ny_correct = 1;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 4873;\r\ny_correct = 1;\r\nassert(isequal(bday_phenom(x),y_correct))","published":true,"deleted":false,"likes_count":6,"comments_count":8,"created_by":3296,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":254,"test_suite_updated_at":"2012-04-20T15:35:29.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-04-18T19:30:11.000Z","updated_at":"2026-04-02T16:44:27.000Z","published_at":"2012-04-19T16:28:12.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFirst off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into consideration, for simplicity.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe basic question is given an input, a single integer representing the number of people in the room (X \u0026gt;= 1). Return the probability that 2 or more people share the same birthday.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe return from the function should be a value between 0 and 1, inclusive. It should also be rounded out to the 10 thousandth decimal point (4 after the decimal point). 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There should be no trailing zeros included.\u003c/p\u003e","function_template":"function y = bday_phenom(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny_correct = 0;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 2;\r\ny_correct = 0.0027;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 5;\r\ny_correct = 0.0271;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 10;\r\ny_correct = 0.1169;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 20;\r\ny_correct = 0.4114;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 30;\r\ny_correct = 0.7063;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 50;\r\ny_correct = 0.9703;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 366;\r\ny_correct = 1;\r\nassert(isequal(bday_phenom(x),y_correct))\r\n\r\n%%\r\nx = 4873;\r\ny_correct = 1;\r\nassert(isequal(bday_phenom(x),y_correct))","published":true,"deleted":false,"likes_count":6,"comments_count":8,"created_by":3296,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":254,"test_suite_updated_at":"2012-04-20T15:35:29.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-04-18T19:30:11.000Z","updated_at":"2026-04-02T16:44:27.000Z","published_at":"2012-04-19T16:28:12.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFirst off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into consideration, for simplicity.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe basic question is given an input, a single integer representing the number of people in the room (X \u0026gt;= 1). Return the probability that 2 or more people share the same birthday.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe return from the function should be a value between 0 and 1, inclusive. It should also be rounded out to the 10 thousandth decimal point (4 after the decimal point). 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