What number continues the series?　3, 6, 12, 24, 48, ___

Correct: B) 96

Each term is double the previous one (×2). 48 × 2 = 96 (B). A adds 24, C adds 12 by mistake.

Which letter continues the series?　B, D, F, H, ___

Correct: C) J

Every other letter — positions 2, 4, 6, 8. The next is position 10 = J (C). A moves by only +1.

A shape gains one side each step: triangle (3 sides) → square (4) → pentagon (5) → ___. How many sides does the next shape have?

Correct: D) 6 sides

The side count rises by one: 3 → 4 → 5, so the next is 6 (a hexagon), D. It is decided by the side count alone, no picture needed.

Which one does not belong?　2, 4, 7, 8

Correct: C) 7

2, 4, and 8 are even, but 7 is odd. So 7 (C) is the odd one out.

What continues the series?　1, 2, 4, 7, 11, 16, ___

Correct: A) 22

The gaps grow by one: 1, 2, 3, 4, 5. The next gap is 6, so 16 + 6 = 22 (A).

Two rules alternate. What continues?　A, Z, B, Y, C, X, ___

Correct: B) D

Odd positions go forward A, B, C…; even positions go backward Z, Y, X…. The 7th term continues the forward run, so D (B).

On a clock face a dot rotates 90° clockwise each step: 12 o'clock → 3 → 6 → ___. Where is the dot next?

Correct: C) 9 o'clock

A 90° clockwise turn goes 12 → 3 → 6 → 9 o'clock. Next is 9 o'clock (C). It is solvable from the positions alone.

Which one does not belong?　9, 16, 20, 25

Correct: A) 20

9 = 3², 16 = 4², 25 = 5² are perfect squares, but 20 is not. So 20 (A) is the odd one out.

Two series interleave. What continues?　2, 100, 4, 90, 6, 80, ___

Correct: D) 8

Odd positions rise by 2 (2, 4, 6…); even positions fall by 10 (100, 90, 80…). The 7th term continues the odd run: 6 + 2 = 8 (D).

Letters pair with numbers. What continues?　A1, B2, D4, G7, ___

Correct: B) K11

Letter positions are 1, 2, 4, 7 with steps +1, +2, +3; the next step +4 gives position 11 = K. The number equals the letter position, 11. So K11 (B).

The number of dots in a figure grows: 1 → 3 → 6 → 10 → ___ (dots stacked in a triangle). How many dots come next?

Correct: A) 15 dots

These are triangular numbers; the gaps 2, 3, 4 grow by one. The next gap is 5, so 10 + 5 = 15 (A). Solvable from the counts alone.

Which one does not belong?　K, P, E, T

Correct: D) E

K, P, and T are consonants; only E is a vowel. So the odd one out is E (D). The classifying axis is vowel vs. consonant.

What continues the series?　2, 3, 5, 8, 12, 17, ___

Correct: C) 23

The gaps increase by one: 1, 2, 3, 4, 5. The next gap is 6, so 17 + 6 = 23 (C).

Convert letters to their positions. What continues?　B, C, E, G, K, M, ___ (positions: 2, 3, 5, 7, 11, 13, …)

Correct: B) Q

The letter positions are the primes 2, 3, 5, 7, 11, 13. The next prime is 17, and the 17th letter is Q (B).

A shape is rotated 90° clockwise each step AND gains one side each step. It starts as an upward triangle (3 sides). After 3 steps, how many sides does it have, and what is the total rotation?

Correct: A) 6 sides, rotated 270°

Sides go 3 → 4 → 5 → 6 over three steps, so 6 sides. Rotation is 90° × 3 = 270°. You must track both rules at once. So 6 sides, 270° (A). Solvable from the numbers alone.

Which one does not belong? (look at the letter count)　MOON, STAR, FROG, SUN

Correct: C) SUN

MOON, STAR, and FROG each have 4 letters, but SUN has only 3. So SUN (C) is the odd one out. The classifying axis is letter count, not meaning.

What number continues the series?　3, 6, 12, 24, 48, ___

Correct: B) 96

Each term is double the previous one (×2). 48 × 2 = 96 (B). A adds 24, C adds 12 by mistake.

Which letter continues the series?　B, D, F, H, ___

Correct: C) J

Every other letter — positions 2, 4, 6, 8. The next is position 10 = J (C). A moves by only +1.

A shape gains one side each step: triangle (3 sides) → square (4) → pentagon (5) → ___. How many sides does the next shape have?

Correct: D) 6 sides

The side count rises by one: 3 → 4 → 5, so the next is 6 (a hexagon), D. It is decided by the side count alone, no picture needed.

Which one does not belong?　2, 4, 7, 8

Correct: C) 7

2, 4, and 8 are even, but 7 is odd. So 7 (C) is the odd one out.

What continues the series?　1, 2, 4, 7, 11, 16, ___

Correct: A) 22

The gaps grow by one: 1, 2, 3, 4, 5. The next gap is 6, so 16 + 6 = 22 (A).

Two rules alternate. What continues?　A, Z, B, Y, C, X, ___

Correct: B) D

Odd positions go forward A, B, C…; even positions go backward Z, Y, X…. The 7th term continues the forward run, so D (B).

On a clock face a dot rotates 90° clockwise each step: 12 o'clock → 3 → 6 → ___. Where is the dot next?

Correct: C) 9 o'clock

A 90° clockwise turn goes 12 → 3 → 6 → 9 o'clock. Next is 9 o'clock (C). It is solvable from the positions alone.

Which one does not belong?　9, 16, 20, 25

Correct: A) 20

9 = 3², 16 = 4², 25 = 5² are perfect squares, but 20 is not. So 20 (A) is the odd one out.

Two series interleave. What continues?　2, 100, 4, 90, 6, 80, ___

Correct: D) 8

Odd positions rise by 2 (2, 4, 6…); even positions fall by 10 (100, 90, 80…). The 7th term continues the odd run: 6 + 2 = 8 (D).

Letters pair with numbers. What continues?　A1, B2, D4, G7, ___

Correct: B) K11

Letter positions are 1, 2, 4, 7 with steps +1, +2, +3; the next step +4 gives position 11 = K. The number equals the letter position, 11. So K11 (B).

The number of dots in a figure grows: 1 → 3 → 6 → 10 → ___ (dots stacked in a triangle). How many dots come next?

Correct: A) 15 dots

These are triangular numbers; the gaps 2, 3, 4 grow by one. The next gap is 5, so 10 + 5 = 15 (A). Solvable from the counts alone.

Which one does not belong?　K, P, E, T

Correct: D) E

K, P, and T are consonants; only E is a vowel. So the odd one out is E (D). The classifying axis is vowel vs. consonant.

What continues the series?　2, 3, 5, 8, 12, 17, ___

Correct: C) 23

The gaps increase by one: 1, 2, 3, 4, 5. The next gap is 6, so 17 + 6 = 23 (C).

Convert letters to their positions. What continues?　B, C, E, G, K, M, ___ (positions: 2, 3, 5, 7, 11, 13, …)

Correct: B) Q

The letter positions are the primes 2, 3, 5, 7, 11, 13. The next prime is 17, and the 17th letter is Q (B).

A shape is rotated 90° clockwise each step AND gains one side each step. It starts as an upward triangle (3 sides). After 3 steps, how many sides does it have, and what is the total rotation?

Correct: A) 6 sides, rotated 270°

Sides go 3 → 4 → 5 → 6 over three steps, so 6 sides. Rotation is 90° × 3 = 270°. You must track both rules at once. So 6 sides, 270° (A). Solvable from the numbers alone.

Which one does not belong? (look at the letter count)　MOON, STAR, FROG, SUN

Correct: C) SUN

MOON, STAR, and FROG each have 4 letters, but SUN has only 3. So SUN (C) is the odd one out. The classifying axis is letter count, not meaning.

What number continues the series?　3, 6, 12, 24, 48, ___

Correct: B) 96

Each term is double the previous one (×2). 48 × 2 = 96 (B). A adds 24, C adds 12 by mistake.

Which letter continues the series?　B, D, F, H, ___

Correct: C) J

Every other letter — positions 2, 4, 6, 8. The next is position 10 = J (C). A moves by only +1.

A shape gains one side each step: triangle (3 sides) → square (4) → pentagon (5) → ___. How many sides does the next shape have?

Correct: D) 6 sides

The side count rises by one: 3 → 4 → 5, so the next is 6 (a hexagon), D. It is decided by the side count alone, no picture needed.

Which one does not belong?　2, 4, 7, 8

Correct: C) 7

2, 4, and 8 are even, but 7 is odd. So 7 (C) is the odd one out.

What continues the series?　1, 2, 4, 7, 11, 16, ___

Correct: A) 22

The gaps grow by one: 1, 2, 3, 4, 5. The next gap is 6, so 16 + 6 = 22 (A).

Two rules alternate. What continues?　A, Z, B, Y, C, X, ___

Correct: B) D

Odd positions go forward A, B, C…; even positions go backward Z, Y, X…. The 7th term continues the forward run, so D (B).

On a clock face a dot rotates 90° clockwise each step: 12 o'clock → 3 → 6 → ___. Where is the dot next?

Correct: C) 9 o'clock

A 90° clockwise turn goes 12 → 3 → 6 → 9 o'clock. Next is 9 o'clock (C). It is solvable from the positions alone.

Which one does not belong?　9, 16, 20, 25

Correct: A) 20

9 = 3², 16 = 4², 25 = 5² are perfect squares, but 20 is not. So 20 (A) is the odd one out.

Two series interleave. What continues?　2, 100, 4, 90, 6, 80, ___

Correct: D) 8

Odd positions rise by 2 (2, 4, 6…); even positions fall by 10 (100, 90, 80…). The 7th term continues the odd run: 6 + 2 = 8 (D).

Letters pair with numbers. What continues?　A1, B2, D4, G7, ___

Correct: B) K11

Letter positions are 1, 2, 4, 7 with steps +1, +2, +3; the next step +4 gives position 11 = K. The number equals the letter position, 11. So K11 (B).

The number of dots in a figure grows: 1 → 3 → 6 → 10 → ___ (dots stacked in a triangle). How many dots come next?

Correct: A) 15 dots

These are triangular numbers; the gaps 2, 3, 4 grow by one. The next gap is 5, so 10 + 5 = 15 (A). Solvable from the counts alone.

Which one does not belong?　K, P, E, T

Correct: D) E

K, P, and T are consonants; only E is a vowel. So the odd one out is E (D). The classifying axis is vowel vs. consonant.

What continues the series?　2, 3, 5, 8, 12, 17, ___

Correct: C) 23

The gaps increase by one: 1, 2, 3, 4, 5. The next gap is 6, so 17 + 6 = 23 (C).

Convert letters to their positions. What continues?　B, C, E, G, K, M, ___ (positions: 2, 3, 5, 7, 11, 13, …)

Correct: B) Q

The letter positions are the primes 2, 3, 5, 7, 11, 13. The next prime is 17, and the 17th letter is Q (B).

A shape is rotated 90° clockwise each step AND gains one side each step. It starts as an upward triangle (3 sides). After 3 steps, how many sides does it have, and what is the total rotation?

Correct: A) 6 sides, rotated 270°

Sides go 3 → 4 → 5 → 6 over three steps, so 6 sides. Rotation is 90° × 3 = 270°. You must track both rules at once. So 6 sides, 270° (A). Solvable from the numbers alone.

Which one does not belong? (look at the letter count)　MOON, STAR, FROG, SUN

Correct: C) SUN

MOON, STAR, and FROG each have 4 letters, but SUN has only 3. So SUN (C) is the odd one out. The classifying axis is letter count, not meaning.