The answer to solve these problems is that the full circle is 360 degrees, the way to find the answer is to have to equal sides that equal 360 degrees. That means one half of 360 degrees is 180 degrees. Hope this helps.
Answer:
I think it's non linear because the 1 to 1 wouldn't work
Li can expect to roll a one 4 times.
Since there are six possibilities (1, 2, 3, 4, 5 & 6), you divide 24 and 6 to get 4.