1.
5/16 * 16/25 = 1/5
13/18 * 18/26 = 1/2
1/5 * 1/2 = 1/10
2.
52/53 * 53/52 = 1
32/33 * 33/34 = 16/17
1.
5/16 * 16/25 = 1/5
13/18 * 18/26 = 1/2
1/5 * 1/2 = 1/10
2.
52/53 * 53/52 = 1
32/33 * 33/34 = 16/17