Odd One Out

NCERT anchor: NCERT Joyful Mathematics Class 1 — classification games in Vegetable Farm

• Find the one item that does not belong in a group.
• State the rule for the group (all fruits, all red, all shapes with 4 sides).
• Justify your odd-one choice in one sentence.

1. Find the different one

Level 1 (Verbal): apple, mango, banana, dog → dog is odd (not fruit).

Level 2 (Symbolic): Rule: fruits → outsider = dog.

Visual: Circle the odd picture.

2. Rule can change

Same four items — odd one differs if rule is colour vs type.

3. More than one answer?

Usually one best odd one for the given rule in the question.

Odd one in transport group

Step 1 — Group: bus, auto, bicycle, **mango**.
Step 2 — Rule: **vehicles** → mango is not a vehicle.
Step 3 — Circle mango; say "Mango is not for travel."
Step 4 — Check others all move people on road.
Answer: mango is odd one out.

• Odd one: red, blue, green, chair?
• Odd one: cat, dog, cow, table?
• State rule: circle, square, triangle, cube — which odd?
• Stretch: Can chair be odd in a 'furniture' group with table, bed, stool?

Revision tip: Whisper the group rule before circling the odd one.

Open the Practice tab for graded questions on Odd One Out.