Number series – add a constant 111 each time: 231, 342, 453, 564, ? Find the next term by continuing the fixed increment.

Introduction / Context:Here the series grows by a fixed amount, +111, per step. Sequences that use “repeated 1s” as a difference are a common exam trope and quick to compute.

Given Data / Assumptions:

• 231→342 (+111), 342→453 (+111), 453→564 (+111).

Concept / Approach:Apply the same increment.

Step-by-Step Solution:

Verification / Alternative check:The linearity holds across all steps; reversing would bring 675 back to 564 via −111.

Why Other Options Are Wrong:

Common Pitfalls:Overcomplicating with multiplicative guesses; always check for fixed differences first.

Final Answer:675