Classification – Stationery vs non-stationery: identify the odd one out. Three items are common stationery tools; one is a toy (not a stationery article). Which option is different? Options: Pencil, Toy, Pen, Scale.

Introduction / Context:
Everyday objects can be grouped by function. Stationery items are used for writing/drawing/measurement; toys are for play.

Given Data / Assumptions:

• Pencil: writing instrument.
• Pen: writing instrument.
• Scale (ruler): measuring/drawing tool.
• Toy: plaything, not a stationery tool.

Concept / Approach:
Group by functional domain: stationery vs non-stationery.

Step-by-Step Solution:
Pencil/Pen/Scale → stationery.Toy → non-stationery.Therefore, Toy is the odd one out.

Verification / Alternative check:
Retail categories confirm the split (stationery aisle vs toys section).

Why Other Options Are Wrong:
Pencil/Pen/Scale: All are classic stationery items.

Common Pitfalls:
Confusing “scale” with weighing machine; here it denotes a ruler used with paper.

Final Answer:
Toy