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Algebra Level 1

Aryan got \(-10\) marks in his first exam and \(15\) marks in his \(15^{\text{th}}\) exam. If all his marks follow an arithmetic progression with a positive common difference, in which exam did he get zero marks?

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100 Day Summer Challenge

I may not be there yet, but I'm closer than I was yesterday!

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.