Complete the sequence of consecutive cubes: 1, 8, 27, 64, 125, 216, (…)? Select the correct next term.

Difficulty: Easy

Correct Answer: 343

Explanation:


Introduction / Context:
The sequence lists perfect cubes of consecutive natural numbers. Identifying which n^3 comes after 216 resolves the item. Cube recognition up to 7^3 is widely used in aptitude questions.


Given Data / Assumptions:

  • 1 = 1^3
  • 8 = 2^3
  • 27 = 3^3
  • 64 = 4^3
  • 125 = 5^3
  • 216 = 6^3


Concept / Approach:
Since 216 is 6^3, the next cube is 7^3. Compute 7^3 by multiplying 7 * 7 * 7 to obtain 343.


Step-by-Step Solution:
6^3 = 216Next n = 7 ⇒ 7^3 = 7 * 7 * 7 = 343


Verification / Alternative check:
Sequence thus continues: 1, 8, 27, 64, 125, 216, 343 — consecutive cubes from 1 to 7.


Why Other Options Are Wrong:
354/392/245 are not perfect cubes and do not match the consecutive-cube pattern.


Common Pitfalls:
Confusing cubes with squares; for example, 256 is 4^4, not in this list. Accurate recall of small cubes helps avoid mistakes.


Final Answer:
343

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