Answer:
90 arrangements
Step-by-step explanation:
Since there are no repititions of letters, there are unique 10 letters in total.
THe number of arrangements would be 2 permutation 10. We need the formula for permutation. That is:
Now, n = 10 [total] and r is 2, so we have:
So, there can be 90 arrangements
Answer:
63
Step-by-step explanation:
you deleted my answer because u know u have an attitude
You want to do to one side the same thing you do to the other side.
In order to get the n by itself you divide the 25n by 25. But in order to not change the answer you need to do the same to the 70.
so n=
which can be reduced to
so n=
Answer:
you multiply 10*2=20
and 2+3=5
Step-by-step explanation:
is this right or wrong?
