11+ Non-Verbal Reasoning: How to Master Odd One Out Questions with SNAPS

Why Odd One Out Questions Matter

Non-verbal reasoning tests how well a child can spot patterns, relationships, and logic in shapes and figures — skills that do not depend on reading ability. Among all the question types, odd one out is one of the most common, and it appears in GL, CEM-style, and independent school papers alike.

The format is simple: your child is shown five figures, usually labelled A to E. Four of them follow a hidden rule, and one breaks it. The task is to find the figure that does not belong — the odd one out.

The challenge is that the “rule” is never stated. It might be about the number of sides in a shape, the direction something points, or the way a figure is shaded. Without a system, children often stare at the page, comparing features at random and second-guessing themselves. That is exactly where a structured method makes all the difference.

Did you know? Odd one out questions reward the same logical habit again and again: instead of asking “which one looks wrong?”, a confident child asks “what do four of these share?” Finding the shared rule makes the outlier obvious.

The SNAPS Method

The most reliable way to approach any odd one out question is a checklist called SNAPS. Each letter stands for one feature to compare across the five figures:

The power of SNAPS is that it gives your child a fixed order to work through. Rather than guessing, they test each feature in turn until they find the one where four figures agree and one disagrees. That figure is the answer.

Tip: Teach your child to run through SNAPS in the same order every time. Consistency builds speed, because the eye learns where to look first. With practice, the checklist becomes almost automatic.

Worked Examples

Let’s walk through three examples in exactly the way a child should think about them.

Example 1 — Angle Gives It Away

Imagine five options, each containing two identical shapes. Run through SNAPS:

• Shape — all five options use the same shape, so this is not the difference.
• Number — every option has two shapes, so number does not help.
• Angle — now the figures separate. In option A, both shapes point in the same direction. In options B, C, D, and E, the two shapes point in opposite directions.

Four figures share the rule “the shapes point in opposite directions”. Only option A breaks it. The odd one out is A.

Example 2 — A Sneaky Substitution

This time, each option contains a small collection of shapes — a plus sign, a diamond, and a circle. Comparing carefully:

• Every option contains a plus and a diamond, so those features are shared.
• Options A, C, D, and E each contain a circle.
• Option B, however, has a semicircle where the circle should be.

A semicircle is not a circle, so option B is the figure that breaks the rule. The odd one out is B.

Tip: When the shapes themselves look almost identical, slow down and check each component one at a time. Examiners love to swap one small element — a circle for a semicircle, a square for a rectangle — to catch out children who rush.

Example 3 — When Shading Is the Key

In this example, each option shows a smaller shape inside a larger shape. Work through SNAPS:

• Shape — the outer shapes are all different (triangle, pentagon, circle and so on), so shape alone cannot be the rule.
• Number — every option has two shapes, an inner and an outer. No help.
• Angle — the shapes sit at various angles, so this is not consistent either.
• Position — the inner shape is always in the middle, so position is shared.
• Size — because the shapes differ, their sizes naturally differ too; this cannot be the rule.
• Shading — here is the answer. In four options, the shading pattern runs diagonally. In one option, the shading runs vertically.

The figure with vertical shading is the odd one out.

Notice how SNAPS quietly eliminated four features before landing on the fifth. That is the method working exactly as intended — it stops your child from fixating on the wrong detail.

Common Mistakes to Avoid

Even bright children lose marks on odd one out questions for predictable reasons:

• Stopping at the first difference. A figure might differ in one way but match in another. Always confirm that four figures genuinely share the rule.
• Ignoring shading and rotation. These are the features children overlook most. Make a habit of checking angle and shading deliberately.
• Rushing under time pressure. A quick SNAPS scan is faster than random staring, because it tells the eye where to look.
• Forgetting to compare like with like. Compare the inner shapes to the inner shapes, the outer to the outer.

Tip: If two answers seem possible, your child has probably found a rule that only three figures share. Go back and check — the correct rule must apply to exactly four of the five figures.

A Simple Weekly Practice Routine

Non-verbal reasoning improves with short, regular practice rather than occasional marathon sessions. Here is a manageable plan:

For broader exam-day tactics, our guide on non-verbal reasoning tips and practice strategies is a helpful companion, and parents new to the whole process will find our practical 11+ guide a useful overview. Once your child is confident with odd one out, move on to trickier spatial questions such as those covered in how to tackle nets and cubes.

The Long Game

Odd one out is not just a question type to memorise — it trains a way of thinking. The habit of asking “what do four of these share?” carries over into series, analogies, and matrices, where the same hidden-rule logic applies. Start early, apply SNAPS consistently, and let regular short sessions do the work. Over a few months, your child will spot the outlier almost instantly.

Practise with the 11+ Apps Suite

The fastest way to build fluency is to practise odd one out questions until the SNAPS method becomes second nature. Our 11+ Non-Verbal Reasoning app helps you do exactly that, with 540 visual pattern questions across 18 topics — including analogy, series, odd one out, cube nets, block counting, hidden shapes, jigsaw, paper folding, 3D rotation, and GL-style triangle and star matrix questions. Each question gives your child repeated, structured exposure to the very patterns examiners use.

The non-verbal reasoning app is part of our complete suite of 8100+ questions across 7 apps, covering maths, English, verbal reasoning, vocabulary, and non-verbal reasoning. Working through the apps together gives your child broad, balanced preparation for every section of the 11+ exam — and the confidence that comes from genuine, well-practised skill.