There has to be 12 marbles in the group. If 4 are red that is 1/3 of 12 and if 3 are blue that is 1/4 of 12. The rest can be any color. That is how you explain how four red marbles can make up 1/3 of a group of marbles and three blue marbles make up 1/4 of the same group :)
The streaks produced in marbles are a product of the impurities present in the sedimentary carbonate rocks such as silt durring metamorphisis.
Uranium marbles contain up to 3 % uranium; these marbles are fluorescent under an UV light.
one of marbles uses are counter tops
because ages ago they used to use marbles instead of glass balls.
The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.
6
5/10
a bag contains 150 marbles some of the marbles are blue and the rest of the marbles are white in the bag there are 21 blue marbles for every 4 white marbles how many of each color marble blue and white are in the bag show or explain your thinking
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7
Most marbles are not rare. Most marbles are decorative and not really even marbles. It is always good to check the value of the specific marble you have to see if it is real or worth anything.
6
a black one
yellow
10*9*8=720
Black * * * * Green * * * White * * *