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3 red and 4 blue balls are in a basket A member of PPTeam is drawing balls from the basket What is the probablity of getting the 3 red balls simultaneously?
The probability is 3/7 * 2/6 * 1/5 = 1/35.
How many golf ball can you fit in a cubic meter?
15625 golf balls will fit in 1 cubic meter. Volume of a golf ball is approximately 40 cubic cm. Since 1 cubic meter has 1,000,000 cubic cm, the number of golf balls purely on voume calculation would be 25,000. However, there would be a lot of empty space between golf balls and hence significant volume will be used by empty space. The diameter of a golf ball is 4 cms. Based on that you should be able to fit 25 balls across length, width and height making the total number of golf balls to be 25 X 25 X 25 = 15,625.
How many balls are in 1 gross of ping pong balls?
about 144 ping pong balls are in a gross.
A basket contains 5 apples How do you divide them among 5 kids so that each one has an apple and one apple stays in the basket?
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How many ping pong balls fit into a 12x12 room?
I will assume that the question is to find the maximum number of balls that could be packed into the space and that each ball must be kept intact. 1 inch = 25.4 mm (exactly) 1 mm = 1/25.4 inches = 0.03937007874015748031496062992126 The standard ping pong ball is 40mm in diameter according to the link 40 mm * 0.03937007874015748031496062992126 = 1.5748031496062992125984251968504 inches in diameter 12 feet = 12 feet*12 inches per foot = 144 inches (in reference to the room's dimensions) We lay the balls end to end along one wall to see how many fit. 144/1.5748031496062992125984251968504 inches = 91.44 At most, 91 whole balls will fit in this space. We now come to the complication that has to do with how the balls might be packed together efficiently (known as the sphere packing problem). For this solution, I will assume that the balls are not packed in an offset manner (the centers of which would form hexagons), but rather are in a configuration where the centers of the balls form a lattice like structure similar to the integer locations on the usual Cartesian Coordinate system. (One difficulty proving the packed solution is that to be clear, one probably needs the ability to enter images into the answer, something that currently is not allowed.) Therefore, I will simply proceed with the assumption that no offsetting of the balls takes place. 91 balls in each of the 3 directions of the cube gives 91*91*91=753,571 total balls. Notice that one cannot simply calculate the number of balls in a cubic foot and then multiply by the number of cubic feet in the room. That is because the balls don't fit exactly into the cubic foot and the extra space accumulates as more cubic feet are utilized.
