The same 4 colors we ve picked them in different orders.
Three marbles with 2 colors can be aranged.
40 320 b regard the 2 boys as one unit and so there are 7 units to arrange.
Back to basics the basic idea of permutation is the different arrangements of distinct objects.
Now with that out of the way let s think about how many different ways we can pick 4 colors.
Drawing the first marble we have a chance probability of dfrac 4 10 dfrac 2 5 for it to be black as there are four black marbles and ten marbles in total.
2 ways so the required answer is 7.
You have 6 black socks 8 white socks and 4 navy blue socks.
Notice that drawing two marbles at the same time is the same as drawing two marbles consecutively without replacing the first marble.
But here the 121 objects a.
But now we have 3 greens and 3 greens can be arranged 6 ways permutations of 3 things one at a time.
10 080 c there are only 2 possibilities.
Answer by edwin mccravy 18145 show source.
This can be done 7.
A bag contains 4 red marbles 3 blue marbles and 5 purple marbles.
That s factorial 12 11 10 2 1 different arrangements.
Suppose we are going to put them into three cups.
The boys can be arranged in 2.
Two with only one possible arrangement each and two with nine possible arrangements each.
The only restriction is that the two red marbles can t be in the same cup.
Total number of discs 4 red 3yellow 2 green n 9.
Show that three purple marbles and three light blue marbles in two groups of three marbles each can be arranged in four combinations.
A this is just 8 people being arranged in a row.
We could put as many as five all except one of the reds in any cup.
The boys are together or they are not.
For 12 distinct objects in a row there are 12.
You keep your socks loose in a drawer.
Since color are repeating so we use this formula 𝑛 𝑝1 𝑝2 𝑝3.
1 slot 2 slot 3 slot and 4 slots.
Example 15 in how many ways can 4 red 3 yellow and 2 green discs be arranged in a row if the discs of the same colour are indistinguishable.
Any help would be much appreciated.
3 blue marbles 2 red marbles and one green marble.
Thus the actual total arrangements is.
How many ways can i arrange 10 red marbles 5 white marbles and 6 blue marbles in a row.
The total arrangements hasn t changed 120 because we have the same number of marbles.
A sample of 4 marbles is taken out of the bag.
In how many ways can at least 3 marbles be purple.
So let s say we have 4 slots here.
And at first we care only about how many ways can we pick a color for that slot right there that first slot.