Yes, there is a category for Math; here's the link:
http://wiki.answers.com/Q/FAQ/2316
The "Math" category with eight Supervisors.
If you visit the Math leaderboard via the Match category page, you will see many great answerers for this month and previous months.
On WikiAnswers, yes, mathematical questions can also be answered. There is a whole category dedicated to math.
No answers can be added to the WikiAnswers Local category.
The supervisors for the 'Questions about WikiAnswers' category are Kamuna and Dino10.
"WikiAnswers Local" is a placeholder category for questions about certain countries. No new questions should be added to the main "WikiAnswers Local" category.
That would be WikiAnswers Local.
The most popular topic would be the Uncategorized category, which has a whopping 11,817,405 questions as of October 18, 2014. The next most popular category is the Math and Arithmetic category with 1,400,706 questions. The third most popular category is the Celebrity Births Deaths and Ages category with 1,029,523 questions.
Special:Search
WikiAnswers has a category called 'Most Amusing Questions Ever Asked on WikiAnswers'. The category is home to many amusing questions that also goes under the category strange, unusual, weird, etc. Below is the link to the category.
There is now a snowmobiling category under Sports.
In WikiAnswers there is a category called 'Quakers' it is a sub category of 'Religion and Spirituality'.