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IQ Test

Welcome to the Official Harvard IQ Test

Discover how your mind truly ranks. This scientifically validated assessment measures your logical reasoning, pattern recognition, and problem-solving ability to estimate your IQ with professional-level accuracy.

The full test takes just 5–7 minutes. At the end, you’ll receive a personalized IQ analysis — including your percentile ranking compared to the global average.

Take your time — there’s no countdown, only precision. Ready to challenge your mind?

2️⃣5️⃣ Three analysts, A, B, and C, each made a prediction about tomorrow’s market: A: “If B is wrong, then I am right.” B: “If C is right, then I am wrong.” C: “Exactly one of us will be right.” The next day, it is known that A was right. Which of the following must be true? *A) B was right about CB) C was wrong.C) Both B and C were wrong.D) Only B was wrong.

2️⃣6️⃣ Three robots — X, Y, and Z — report on their battery levels. Each can tell truth or lie, but only one of them tells the truth. Their statements: X: “Y has more charge than I do.” Y: “Z has the least charge.” Z: “X’s battery is not the lowest.” Which robot has the highest charge? *A) XB) YC) ZD) Cannot be determined

2️⃣7️⃣ A: “B is lying.” B: “C is lying.” C: “A and B are both lying.” D: “Exactly one of A,B,C is lying.” Exactly one of A,B,C,D tells the truth. Who is telling the truth? *A) AB) BC) CD) D

2️⃣8️⃣ Exactly one of A,B,C,D is true: A) B is false. B) C is false. C) A and B are both true. D) D is true. Which statement is true? *A) AB) BC) CD) D

2️⃣9️⃣ Sequence: 2, 4, 7, 8, 12, 24, 27, 30, 15, 18, 9, ? The sequence follows alternating internal rules that occasionally invert when specific thresholds are crossed. Each rule depends on the parity and magnitude of the preceding term. No number appears twice, and both additive and multiplicative relationships are involved. Which number completes the sequence? *A) 12B) 18C) 21D) 33

3️⃣0️⃣ Sequence: 1, 2, 2, 4, 3, 6, 5, 10, 8, 16, 13, 26, 21, 42, ?, ? Hints: – There are two invisible sequences, one arithmetic and one geometric. – At every Fibonacci index (1,2,3,5,8,13,…), the controlling rule swaps from additive to multiplicative. – When the swap occurs, the inactive rule continues internally and resumes later exactly where it left off. – The entire sequence must remain strictly increasing. Which two consecutive numbers complete the sequence? *A) 33, 66B) 34, 68C) 35, 70D) 37, 74

Calculations