## 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.

## Comments

Sort by:

TopNewestYou may read the solution to learn why you are wrong.

You may submit a dispute along with your explanation, to substantiate why you think you are correct. – Calvin Lin Staff · 4 years, 1 month ago

Log in to reply

it has a wrong answer. 406 hits is the maximum. no. of hits. while 345 hits is the minimum. tss. – John Clyde Escucha · 4 years, 1 month ago

Log in to reply