IQ Test: 7 Questions That Only 3% of Adults Get All Right

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Written by Steeve

March 9, 2026

✅ Answer: The ball costs $0.05 (5 cents)

If the ball costs 10 cents, then the bat costs $1.10 (which is $1.00 more). Together that’s $1.20 — not $1.10.

The correct answer: ball = $0.05, bat = $1.05. Together = $1.10.

Over 80% of students at Harvard, MIT, and Princeton got this wrong. It was the first question for a reason — it proves that your brain takes shortcuts even when you tell it not to.

Score: __/1

If you got it right without hesitating, you might actually survive this test.

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