Mode is the value that repeats most often. One value must repeat at least twice for it to be a mode.
{1/3, 1/3, 1/2} has a mode of 1/3.
If you need help understanding math so you can solve these problems yourself, then one on one online tutoring is the answer ($30/hr). If you need faster solutions with guaranteed detailed answers, then go with personal problem solving ($3.50-$5.50 per problem). Contact me at fcabanski@hotmail.com