|
Q1. To find the number of different arrangements of the set we select a first choice; there are 4 possible choices.
Now we take a second choice; there are 3 choices. Now pick a third choice; there are 2 choices.
Finally, there is 1 choice for the last selection. Thus, there are 4 * 3 * 2 * 1 or 24
The total number of permutations of a set of n objects is given by n!
Q3. take out 3 lots of 10 put back in 3 lots of 7 you are left with 9L (the question does not state using only the containers you have)
Last edited by TrevorW; 10-03-2011 at 05:05 PM.
|