Numbers are said to be in descending order when they are arranged from the largest to the smallest number. E.g. 25, 21, 17, 13 and 9 are arranged in descending order. Write the following integers in descending order? [3 MARKS]
(a). 15, -14, 13, 12, 0
(b). 3, -3, 5, -5, 7
(c). 6, -7, -8, 9, -10