IQ test practice questions with answers
These 10 questions cover the main types found on IQ tests: number and letter series, matrix reasoning, analogies, logic and spatial reasoning. Try each one before opening the answer. None of them appear in the Lattice test itself, so practicing here won't inflate your score.
Questions
What comes next?
5, 10, 20, 40, ?
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80. Each term doubles.
What comes next?
81, 27, 9, 3, ?
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1. Each term is divided by 3.
What comes next?
1, 1, 2, 3, 5, 8, ?
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13. Each term is the sum of the two before it (the Fibonacci sequence).
What comes next?
C, F, I, L, ?
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O. Each letter moves forward 3 places: L + 3 = O.
A 3×3 grid holds dots. Row 1: 1, 2, 3 dots. Row 2: 2, 3, 4 dots. Row 3: 3, 4, ? dots. How many dots go in the last cell?
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5. Counts rise by 1 across each row and down each column.
Glove is to hand as sock is to …
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Foot. A glove covers a hand; a sock covers a foot.
Which does not belong: triangle, square, circle, cube?
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Cube. The others are flat 2D shapes; a cube is a 3D solid.
All Zips are Zaps. No Zaps are Zops. What follows?
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No Zips are Zops. Every Zip is a Zap, and no Zap is a Zop, so no Zip can be a Zop.
Tom is 4 years older than Sara. In 2 years, Tom will be twice as old as Sara. How old is Tom now?
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6. Let Sara be s: s + 4 + 2 = 2(s + 2), so s = 2 and Tom is 6.
A cube painted red on every face is cut into 27 equal smaller cubes. How many small cubes have exactly two red faces?
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12. Two painted faces means a cube on an edge but not a corner. A cube has 12 edges with one such cube each.
Tips for each question type
- Series: check differences first, then ratios, then whether two rules alternate.
- Matrices: track one attribute at a time (shape, count, shading, rotation) across rows, then down columns.
- Analogies: state the relationship in a sentence ("a glove covers a hand"), then apply the same sentence.
- Syllogisms: accept only what must be true. "Some" never lets you conclude "all".
- Spatial: pick one distinctive feature of the shape and follow where it goes when the shape turns.
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