Which of These Ball Is Heaviest?
Investigate the full background Which of These Ball Is Heaviest with our in-depth report.
No mention of what kind of weighing apparatus. Assuming there are no weight unit scale (grams or pounds) just a balance scale and use the balls only as counter weights. There are 4 balls. 3 of them weigh the same. One of them has a different weight (you don’t know if it’s heavier or lighter).
Which is heavier, a 7 or a 9?
If one set is heavier, save those three balls. If neither side is heavier, proceed with balls 7,8,9. The final weighing requires you to weigh two of the three selected balls. If they are the same, the unweighed ball is the heavy one. If they are different, then the heavier of the two is the odd ball.
Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.
