Odd One Out

In five cards, the third number is the product of the first two. Which card breaks that rule?

odd-v2-002Easy

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Multiply the first two numbers.

Enable JavaScript to check your answer. Hint: Multiply the first two numbers.

Read the answer

E is different: 3 × 6 = 18, not 21. The other five products are correct.

New puzzles · v2

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The intended answer