8. Insert the missing number.: 1, 8, 27, 64, 125, 216, (….) September 6, 2025 by Admin [A]. 354 [B]. 343 [C]. 392 [D]. 245 ✅ The correct answer is option B. Numbers are 13, 23, 33, 43, 53, 63. So, the missing number is 73 = 343.