If you are referring to glass marbles then just heat in an oven and plunge into water but since this is a geology section you might mean "crack Marble" as in preparation for mining. To do that the old way was to drill a number of holes and drive wooden pegs in and add water to make them swell and crack marble. That was the way from Egyptian times to the 1800's. Blasting will remove chunks if gravel is wanted or blocky chunks but if you want a piece for statuary or for building stone it is usually cut using a wire saw, reciprocating saw, high temperature torch (Kerosene + Oxygen) or a giant chainsaw up to 40 feet long.
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.
what are magic marbles ,they sound cool! do we have them in England
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 :)
He will have 13 blue marbles and 10 green marbles.
10 Green marbles, 13 Blue marbles.
He has 10 green marbles.
There could be 12 white marbles and 16 red marbles
at least 39 blue marbles
8:6
12 blue marbles
24 red marbles
12 blue marbles
If there are 20 red marbles and 40 blue marbles, the ratio of red to blue is 1 over 2. The number of white marbles does not matter.
20% of 50 marbles is 1 fifth of the marbles in the bag. so 50 marbles divided by 5 =10 blue marbles
48 marbles