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Are you smarter than me? 48

Number Theory Level 4

Find the number of 4-digit numbers (in base 10) having non-zero digits and which are divisible by 4 but not by 8.

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

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Our wiki is made for math and science

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

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including olympiad champions, researchers, and professionals.

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View solutions

by Mehul Chaturvedi

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