D. 20, 29

E. 22, 25

Kunci Jawaban: C

2. 9, 7, 20, 18, 31, 29, 42, ..., 53, 51, ...

A. 41, 63

B. 55, 49

C. 47, 49

D. 40, 49

E. 40, 64

Kunci Jawaban: E

3. c, d, e, c, d, e, f, ..., ..., e, f, g

A. G, h

B. C, d