10. 1, 8, 9, 16, 17, ...., 25
A. 24 D. 36
B. 28 E. 24
C. 34
Pembahasan:
1, 8, 9, 16, 17, ...., 25
+7 +1 +7 +1 +7 +1
Jadi, jawabannya adalah 17 + 7 = 24.
11. 3, 5, 9, 15, 15, 25, 21, ....
A. 45 D. 42
B. 44 E. 41
C. 35
Pembahasan:
3, 5, 9, 15, 15, 25, 21, ....
+6 +6 +6
+10 +10 +10