A) 69
B) 76
C) 80 ✓
D) 84
Solution:
2, 5, 12, 23, 38, 57, 80
+3 +7 11 15 19 23
2+3 =5 5+7=12
12+11= 23 23+15=38
38+19=57 57+23=80
A) 69
B) 76
C) 80 ✓
D) 84
Solution:
2, 5, 12, 23, 38, 57, 80
+3 +7 11 15 19 23
2+3 =5 5+7=12
12+11= 23 23+15=38
38+19=57 57+23=80