Chess & Rice Grain

Algebra Level 1

A girl puts \(1\) grain of rice in the first square of an 8 by 8 chess board. In the subsequent square she puts twice that of the previous square, and she continues until she fills all the squares. How many total grains does she need?

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Chess & Rice Grain

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Community

100 Day Summer Challenge

Chess & Rice Grain

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, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

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

Master advanced concepts through explanations,
examples, and problems from the community.

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

Master advanced concepts through explanations,
examples, and problems from the community.

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