A. 18, 23, 22
B. 17, 22, 21
C. 16, 21, 20
D. 15, 20, 19
Jawaban:
5, 4, 9, 8, 13, 12, 17, ..., ..., ...
-1 +5 -1 +5 -1 +5
pola berikutnya :
17 - 1 = 16
16 + 5 = 21
21 - 1 = 20
jadi jawabannya C
6. 1,3,4,7,9,13, 16, 21, ..., ...
A. 27, 31
B. 25, 31
C. 25, 30
D. 25, 29