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Quizzes > Personality & Relationships > Puzzles & Riddles

Discover Your Intelligence: Take the High IQ Quiz Now

Think you can ace our online IQ quiz? Challenge your intelligence and test your skills!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art brain shapes geometric patterns letters numbers on sky blue background representing intelligence quiz

This free high IQ quiz helps you estimate your IQ as you solve logic, pattern, and verbal puzzles. Play at your pace to spot strengths, or switch to a focused verbal reasoning quiz. Finish to see your score and what to practice next.

What number comes next in the series: 2, 4, 6, 8, __?
9
14
10
12
This sequence is an arithmetic progression with a common difference of 2, so each term increases by 2. After 8, adding 2 gives 10. Recognizing arithmetic sequences helps solve many IQ test questions. For more on arithmetic progressions see .
What is the missing number in the Fibonacci sequence: 1, 1, 2, 3, 5, 8, __?
13
10
11
12
The Fibonacci sequence adds the two previous terms to get the next one: 5 + 8 = 13. Recognizing this pattern is a common IQ test skill. Learn more at .
Which of the following is a prime number?
23
22
21
24
A prime number is divisible only by 1 and itself. Of the listed options, only 23 meets that criterion. Understanding primes is fundamental in many IQ test sections. See .
If all Bloops are Razzies and all Razzies are Lazzies, are all Bloops definitely Lazzies?
True
False
This is a classic syllogism demonstrating transitive property: if A?B and B?C, then A?C. Therefore, all Bloops are Lazzies. For more on syllogisms see .
What is the opposite of "diligent"?
tenacious
lazy
conscientious
industrious
"Diligent" means hardworking and industrious, so its direct opposite is "lazy." Other options are synonyms of diligent. See .
What comes next in the pattern of letters: A, C, E, G, __?
J
H
K
I
This pattern skips one letter each time: A?C?E?G, so next is I. Recognizing alphabetic sequences appears frequently in IQ tests. More at .
In analogy, Dog is to barking as cat is to __?
neighing
oinking
roaring
meowing
This is a sound-to-animal analogy: dogs bark, cats meow. Analogies test vocabulary and relational reasoning. See .
Which word is a synonym for "joyful"?
angry
elated
bored
sad
"Elated" means very happy or joyful. It's the only synonym among the options. Vocabulary knowledge is key in verbal IQ sections. See .
What number comes next in the series: 3, 6, 12, 24, __?
72
36
48
60
Each term doubles the previous one (×2). So 24×2 = 48. Recognizing multiplicative patterns is common in IQ tests. See .
Which letter comes next in the sequence: Z, X, V, T, R, __?
N
P
Q
O
This sequence goes backward through the alphabet, skipping one letter each time: Z?X?V?T?R?P. Letter-sequence puzzles are typical in IQ tests. See .
If the day before two days after the day before tomorrow is Saturday, what day is today?
Saturday
Friday
Thursday
Sunday
Day before tomorrow is today; two days after today is the day after tomorrow; the day before that is tomorrow. That must be Saturday, so today is Friday. Time-logic puzzles assess sequential reasoning. See .
Which number does not belong in the series: 2, 3, 5, 7, 11, 13, 17, 18?
11
13
17
18
All listed numbers are primes except 18, which is divisible by 2 and 9. Identifying non-primes in a prime list tests numerical reasoning. See .
What is half of a quarter of 80?
15
10
20
5
A quarter of 80 is 20; half of 20 is 10. Fraction calculations are commonly tested in IQ math problems. See .
Foot is to shoe as hand is to __?
sock
glove
belt
hat
This analogy pairs an article of clothing with the body part it covers: shoes cover feet, gloves cover hands. See .
Arrange the words ALBUM, CAFE, DECAF, BEAD in alphabetical order. Which word comes second?
DECAF
ALBUM
BEAD
CAFE
Alphabetical order: ALBUM, BEAD, CAFE, DECAF. BEAD is second. Such ordering tasks test verbal sequencing skills. See .
If two typists can type two pages in two minutes, how many typists are needed to type 18 pages in six minutes?
4
12
6
8
Two typists type 2 pages in 2 minutes => each typist types 1 page in 2 minutes (0.5 pages/min). To type 18 pages in 6 minutes, rate needed is 3 pages/min, so 3/0.5 = 6 typists. See .
What is the missing number in the series: 1, 2, 6, 24, 120, __?
600
360
720
420
This is the factorial sequence: n! for n=1,2,3,4,5,... so 6! = 720. Factorials often appear in advanced numerical IQ questions. See .
John is taller than Peter. Peter is taller than Mary. Mary is taller than Lucy. Who is the second tallest?
Lucy
Mary
Peter
John
Ordering by height gives John > Peter > Mary > Lucy, so Peter is the second tallest. Transitive ordering is a common reasoning skill. See .
Tree is to forest as star is to __?
galaxy
solar system
constellation
nebula
A forest is a group of trees, and a constellation is a recognized grouping of stars. Analogies testing these relationships are standard in high-level IQ tests. See .
Which 3D shape has eight faces?
dodecahedron
octahedron
cube
icosahedron
An octahedron has eight faces. Cubes have six, dodecahedrons have twelve, and icosahedrons have twenty. Spatial reasoning questions frequently include polyhedra. See .
In the classic cryptarithm SEND + MORE = MONEY, what digit does M represent?
8
1
0
9
Solving the cryptarithm yields M = 1 as the only value that makes the sum work digit-by-digit. Cryptarithms test logical deduction and arithmetic. See .
If five machines take five minutes to make five gadgets, how long will 100 machines take to make 100 gadgets?
5 minutes
10 minutes
20 minutes
100 minutes
Each gadget takes one machine five minutes. Running 100 machines in parallel to produce 100 gadgets still takes five minutes. Rate and work-distribution puzzles are frequent in IQ exams. See .
What is the 7th prime number?
17
13
15
19
Primes: 2, 3, 5, 7, 11, 13, 17 - the 7th prime is 17. Recognizing prime sequences is a common IQ-test skill. See .
Which word is the odd one out: apple, peach, carrot, banana?
apple
banana
peach
carrot
Carrot is a vegetable while the others are fruits. Identifying category outliers tests abstract classification skills. See .
Which set of three positive integers has a product equal to their sum?
1, 2, 3
1, 2, 4
2, 2, 2
1, 3, 3
Only 1 + 2 + 3 = 6 and 1 × 2 × 3 = 6, satisfying the condition. Other sets do not match sum and product. Such Diophantine puzzles demand high-level numerical insight. See .
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Study Outcomes

  1. Understand High IQ Quiz Components -

    Identify the key elements of a free online IQ quiz, including pattern recognition, verbal reasoning, and problem-solving tasks.

  2. Analyze Pattern Recognition and Verbal Reasoning -

    Examine question types in the high IQ quiz and online IQ quiz to sharpen analytical and language skills.

  3. Apply Effective Test-Taking Strategies -

    Use practical techniques to improve accuracy and speed on this free IQ test and other IQ test practice sessions.

  4. Interpret Your IQ Test Results -

    Decode your IQ score from the high IQ quiz to pinpoint your cognitive strengths and areas for improvement.

  5. Compare Scores with Standard Benchmarks -

    Relate your quiz performance to established intelligence scales and see how you measure up on the intelligence scale.

  6. Use Insights for Cognitive Growth -

    Leverage feedback from the high IQ quiz to guide your preparation for psychometric exams and future IQ challenges.

Cheat Sheet

  1. Mastering Pattern Recognition -

    Raven's Progressive Matrices are the gold standard for pattern recognition in high iq quiz assessments (Source: Psych.org). Practice by identifying the rule transforming one shape into the next - for example, rotating a square 90° while adding a dot in each step. A helpful mnemonic is "Observe, Hypothesize, Test" to streamline your approach to each matrix.

  2. Sharpening Logical Deduction -

    Logical syllogisms and conditional reasoning questions often appear in free IQ tests (Source: APA Journals). Break down statements into "if - then" components, such as "If all A are B and C is A, then C is B," to validate conclusions. Use a simple flowchart or truth table on scratch paper to keep track of premises and outcomes.

  3. Building Verbal Analogy Skills -

    Verbal analogies measure your ability to recognize relationships between words, a common section in online IQ quiz platforms (Source: ETS). Practice classic analogies like "Bird is to Nest as Bee is to Hive" and create your own pairs to deepen understanding. Mnemonic trick: remember "A→B means relationship R" and label R explicitly (e.g., habitat, function, part - whole).

  4. Cracking Number Series -

    Numerical sequences test your quantitative reasoning in many IQ test practice banks (Source: Mensa Foundation). Familiarize yourself with arithmetic (an = a1 + (n - 1)d) and geometric series (an = a1·r^(n - 1)) formulas to predict the next term. A quick tip: check for multiple patterns simultaneously - differences, ratios, or alternating operations.

  5. Enhancing Spatial Visualization -

    Spatial tasks appear in both psychometric exams and high iq quiz challenges to assess mental rotation and 3D manipulation (Source: Harvard Vision Lab). Use paper folding or imaginary rotation exercises - visualize how a cube with colored faces looks after a 180° turn. Recall "Right”Hand Rule" for consistent orientation when solving rotation items.

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