In order for 4 red marbles to be one-third of a group and 3 blue marbles to make up one-fourth of the same group the number has to equal 12.
15
The second and third marbles depend upon the first, so they are dependent. Even if they are all being drawn together, because there is no replacement, each removal affects the original group of marbles.
5 marbles
The first could be white, the second could also be white, but for the third there are no white left so the third would have to be black. The first or second could be black, but to guarantee at least one black you need to remove 3 marbles.
The third and fourth ventricles are linked by the aqueduct of Sylvius .....
the first level is the dolphin surf second is whale's tail third is shark attack fourth is sea glider
I think the trading is the other way around and then the answer is 18 marbles in all.
the top were people who were Muslims from birth, next came those who converted to Islam. The third group included jews, christians, and zoroastrians. the fourth group were slaves, none of whom were muslims
First white = 10/20 second white = 9/19 third white = 8/18 fourth white = 7/17 firth white = 6/16 Total probability = 10/20 x 9/19 x 8/18 x 7/17 x 6/16 = 21/1292 ~= 0.0163
Jefferson was the third president, James Madison was the fourth.
No, one third is more than one fourth