A short, fun riddle regarding 9 marbles, a balance, and a 2 measurement limit. Complete with pictures.

You have 9 balls, equally big, equally heavy - except for one, which is a little heavier. How would you identify the heavier ball if you could use a pair of balance scales only twice? Divide the 9 balls into 3 groups of 3. Compare the weight of two of those groups.

The 9 marbles are all uniform in size, appearance and shape. You have access to a balance scale containing 2 trays - you may use the balance 2 times. You must determine which of the 9 marbles is the heavier one using the balance only 2 times.

The answer to the nine marbles puzzle, did you try your hardest to find the correct solution? Place 3 marbles on each tray. - If the first weighing doesn't balance, remove all the marbles from the lighter side, and place one marble on each tray from the heavier tray.

Dec 25, 2023 · To find the lighter marble among 9 marbles in the least number of weighings using a balance scale, the best method involves using 2 weighings. Here are the steps to solve the problem: Divide the Marbles: Start by dividing the 9 marbles into 3 groups of 3 marbles each, let's label them as Group A, Group B, and Group C.

There are 9 marbles and a two-pan balance. All of the marbles look exactly the same. 8 of them weighs the same. The other marble is slightly heavier so that you can't measure it without the...

9 marbles: 4 are green, 2 are red, and 3 are blue. Karen chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that the first marble is red and the second is blue? Write your answer as a fraction in simplest form. Answer by greenestamps(13138) (Show Source):

Nov 30, 1999 · One of the bags contains only marbles weighing nine grams each. Each bag has a different number of marbles in it. All of the marbles look exactly the same. The riddle is how can you know which bag has the nine gram marbles if the only device allowed to be used is a weighing scales which you can use only once?

Bigger Unknown: Ali had 9 marbles. Smaller Unknown: Maria had 5 marbles. Possible equations: ? + 4 = 9; 9 – 4 = ? Providing instructional and assessment tasks, lesson plans, and other resources for teachers, assessment writers, and curriculum developers since 2011.

Question 400727: There are 9 marbles in a bag. Some are red, some are white, and some are blue. The probability of selecting a red marble, a white marble, and then a blue marble is 1/21. How many of each color are in the bag? Answer by robertb(5830) (Show Source):