Look at this series: 201, 202, 204, 207, ... What number should come next?

Given data

• Sequence: 201, 202, 204, 207, ...

Concept/ApproachSuccessive increments increase by 1: +1, +2, +3, ...

Step-by-step calculation201 + 1 = 202202 + 2 = 204204 + 3 = 207Next: 207 + 4 = 211

Verification/AlternativePattern of triangular increments holds across terms.

Common pitfalls

• Adding a constant step instead of increasing steps.

Final Answer211