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Solve it without a calculator

Number Theory Level 1

How many numbers below is/are divisible by 9?

A. 108

B. 616

C. 294

D. 432

E. 927

Don't use a calculator.

2 4 3 0 5 1

View solutions

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

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including olympiad champions, researchers, and professionals.

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by Munem Shahriar

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