List the elements of each of the following sample spaces:
(a) The set of integers between 1 and 50 divisible by 8;
a) 8, 16, 24, 32, 40, 48
b) 1, 9, 17, 25, 33, 41, 49
c) 8, 15, 24, 32, 40, 48
d) 1, 8, 16, 24, 32, 40, 48