ID399 - unsuccessful solutions

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#	Problem	Language	Link	Date
6	Rounding	Java	view	Nov 24 2020
7	Fahrenheit to Celsius	Python	view	Nov 24 2020
9	Triangles	Java	view	Nov 24 2020
11	Sum of digits	Java	view	Nov 24 2020
20	Vowel Count	Java	view	Nov 24 2020