Question 610090
1, 7, 21, 46, 85, 141

series has differences
6, 14, 25, 39, 56, 
which has differences
8, 11, 14, 17, 

11-8 = 3
so 17 +3 =20
20+56 = 76
141+76 = 217

so the answer is B. 217