Crown

Number Theory Level 2

A crown is made of diamonds, rubies and emeralds. The ratio of diamonds to rubies is $5:6,$ and the ratio of rubies to emeralds is $8:3$ . What’s the minimum number of gems on the crown?

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Crown

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 7 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.