SERIES

a)  4, 20, 22, 110, 112, ........, ..........

b) 80, 40, 20, ......., .........

c)50, 25, 30, 15, 20, ........., ........

d) 3, 3, 8, 8, 40, ........, .........

e) 9, 5, 36, 10, 144, 20, ......., ........

f) 7, 3, 4, 14, 10, 11, 28, ........, ........., ..........

g) 4/2, 12/6, 36/18, .........., ..........

h) 5/3, 15/6, 45/12, ........, ...........

i) 9, 45, 42, 210, 27, ........., ........

j) 30, 26, 32, 28, 34, ........, .........