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A riddle question number 6

Logic Level 1

Mr. Smith has 4 daughters. Each of his daughters has a brother. How many children does Mr. Smith have?

5 6 7 8

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Chang Lu Rui

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