Answer:
700
Step-by-step explanation:
Answer:
56
Step-by-step explanation:
This problem can be solved b using a combination. We're using a combination for this because the order in which you would pick the songs doesn't matter. To solve, we would plug in the number of songs we want to download, in this case 8, into the n value of the combination. Then we would plug in the number of songs that we can pick, in this case 3, in the r value of the combination. Solve the combination and we get 56.
1.55 us gallons.
hope i could help!
Thunderclan89
Answer:
1,404,000 unique passwords are possible.
Step-by-step explanation:
The order in which the letters and the digits are is important(AB is a different password than BA), which means that the permutations formula is used to solve this question.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
![P_{(n,x)} = \frac{n!}{(n-x)!}](https://tex.z-dn.net/?f=P_%7B%28n%2Cx%29%7D%20%3D%20%5Cfrac%7Bn%21%7D%7B%28n-x%29%21%7D)
In this question:
2 digits from a set of 10(there are 10 possible digits, 0-9).
3 characters from a set of 26. So
![P_{10,2}P_{26,3} = \frac{10!}{8!} \times \frac{26!}{23!} = 10*9*26*25*24 = 1404000](https://tex.z-dn.net/?f=P_%7B10%2C2%7DP_%7B26%2C3%7D%20%3D%20%5Cfrac%7B10%21%7D%7B8%21%7D%20%5Ctimes%20%5Cfrac%7B26%21%7D%7B23%21%7D%20%3D%2010%2A9%2A26%2A25%2A24%20%3D%201404000)
1,404,000 unique passwords are possible.
Answer:
Answer: (2w-1)(2w-1)
The top left is the answer.
Step-by-step explanation: