How can you identify a heavier ball from 7 similar looking balls?

Interview Answers If the scales are equal, you have the weighted ball in your hand. If they are not equal, you take the balls from the heavier side and and weigh 1 and 1. If the balls are equal you are holding the weighted ball in your hand, if not, you know which is heavier by the scales.

What’s the heaviest ball in the world?

At an estimated weight of 21,280 pounds, the world’s heaviest ball of twine was constructed by James Frank Kotera, nicknamed “JFK.” Over the past 37 years, JFK has spent tens of thousands of hours wrapping twine into a ball in an isolated house in Lake Nebagamon, Wisconsin.

How do I get a defective ball from 10 balls?

Take 1 ball out of the 1st box, 2 balls out of the 2nd, 3 balls out of the 3rd, etc…. and then weigh all of the balls. Then take the total weight = 10*total number balls + x. Solve for x and that will tell you which box is defective.

Which is heavier pound of feathers or bricks?

But according to question, both of the objects weigh the same. As you mentioned that the feathers and bricks weigh 1 pound each. So their weight should be equal. But the quantity of feather would be much more where you can accommodate one or two bricks for 1 pound.

What is the weight of brain teaser?

What Is the Weight Brain Teaser. It’s one of the most popular math riddles these days. If two bears are 120kg, one bear is 60kg. A bear and a rabbit are 70kg If the bear is 60kg alone, then the rabbit is 10kg.

Which ball does not get weighed on the scale?

If the scale balances, then the ball that didn’t get weighed is the heavy ball. If the scale does not balance, the ball on the heavier side is the heavy ball. That’s all for 9 balls Puzzle, If you liked it, please share your thoughts in a comments section and share it with others too.For more interesting puzzles visit Interview Puzzles.

How do you know if a ball is heavier 1 or 2?

Weigh {1} on the left and {2} on the right. By doing this, we will know if 1 or 2 is heavier. If they balance out, then 3 is the heavier one. If the right side is heavier, then we know that either 4, 5 or 6 is the heavier ball. Weigh {4} on the left and {5} on the right.

How many times can you measure a ball with a balance scale?

Hence, the answer is once (if I’m luck enough to select the heavier ball in teh first measurement) If a balance scale allows to measure only one ball at a time, then it would take two measurements, unless you’d have more information on the weight, which is not listed here, hence doesn’t exist in the context of the question^.

How do you know if a scale is balanced?

If the scale balances, then the ball that didn’t get weighed is the heavy ball. If the scale does not balance, the ball on the heavier side is the heavy ball. Second weigh (b) :- If the scale is not balanced, then the different weight (heavier/lighter) ball must be either in A {3 balls} or in B {3 balls}.