Answer:
27,600
Step-by-step explanation:
We use the following formula:-
Number of permutations of r from n
= nPr
= n! / (n-r)!
I am assuming you don't allow repeated letters in the 4 letter codes.
Take S as the first letter. Then we have 3 letters extra out of 25 letters.
Using the above formula the possible ways of doing this is
25! / (25 - 3)!
25! / 22!
= 25*24*23
= 13800.
The same number is obtained if the first letter is a T.
So the answer is 2*13800
= 27,600
Answer:
Step-by-step explanation:
x^{3}\sqrt{yz}
2^{3}\sqrt{82}
=72.443...
7 1/2 / 6 = 1.25 pounds
Candy weight in each box = 1 1/4 pounds
l = 7.5 * 10^-6
3l = 3* (7.5* 10^-6)
= 22.5 * 10^-6
000022.5 * 10^-6
move the decimal 6 places to the left
.0000225 meters
Answer: .0000225 meters
