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Today's Mental Sharpener - September 14, 2026

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Eight IQ-style puzzles for a fresh mental workout: patterns, deduction, spatial reasoning, mental math, and two timed memory challenges. For memory questions, start when ready, study the material, then answer after it disappears. One point per correct answer, eight points total. Allow about 7 minutes. This recreational quiz reports your quiz score, not a standardized IQ score.

Your answers are stored with your account. If you choose anonymous participation, your identity will not be displayed with the tool response.
1. Memory challenge *

You will have 30 seconds to study the material. It will then disappear, and you will answer a question about it.

2. The gaps increase by two each time: 4, 7, 12, 19, 28. What comes next? *
3. Every amber tile is round. No round tile is striped. Which statement must be true? *
4. A robot faces north. It turns right 90 degrees, left 180 degrees, then right 90 degrees. Which direction does it face? *
5. Three identical notebooks and a $2 pen cost $17 altogether. What do two of those notebooks cost? *
6. Memory challenge *

You will have 45 seconds to study the material. It will then disappear, and you will answer a question about it.

7. Complete the missing value. In each row, the third number equals the first number multiplied by the second, plus the first. Rows: (2, 3, 8), (4, 2, 12), (3, 5, ?). *
8. Exactly one of three boxes contains a token. Box A says "The token is in B." Box B says "The token is in C." Box C says "The token is not in C." Exactly one statement is true. Where is the token? *
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