You have been given \( n \) sacks with grains having weight of \( 10 grams \) in each sack except one sack in which grains have weight of \( 9 grams \). You have been given a weighing machine for use. In how many minimum number of usage of that weighing machine can you identify the sack.
Note: In each sack there are infinite number of grains
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.
Your answer seems reasonable.
Find out if you're right!