1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elis [28]
3 years ago
5

How many 3 letter codes are possible using a-j without repeats?

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0
There are 10 letters in the set {a, b, c, d, e, f, g, h, i, j} which is the pool of letters to choose from when making these three letter codes.

We have 10 choices for slot 1
Then 9 choices for slot 2. This is because we can't reuse the choice for slot 1
Then 8 choices for slot 3

Overall, there are 10*9*8 = 90*8 = 720 different permutations

Answer: 720

Note: you can use the nPr permutation formula with n = 10 and r = 3 to get the same answer
You might be interested in
The ratio of a model scal die cast motorcycle is 1:18. the model is 5.25 inches long. what is the length of the actual motorcycl
Rudik [331]
1: 18 = 5.25/x
18(5.25)=1x
94.5=1x
94.5/1=1x/1
94.5= 7ft 10 1/2 in
PROBABLY WRONG CHECK WITH SOMEONE
4 0
2 years ago
Can you please provide me step by step instructions on how to work this problem?
IgorC [24]
Whats the problem if u forgot type it over and type the problem
8 0
3 years ago
A trail has markers every 1/8 mile. Jody starts at the 2 1/4 mile marker, hikes to the 4 3/8 marker, and then hikes back to the
vlada-n [284]
Yes I think so because she started at 2 1/4 then hiked to 4 3/8. That is roughly 2 miles and then from there she joked all the way back to 11/2? But I could be wrong?????
3 0
3 years ago
The first step in factoring a trinomial of the form is to find two numbers, m and n, such that m + n = b and _____.
Licemer1 [7]

Answer:

Correct choice is C). mn=ac

Step-by-step explanation:

Given statement is that the first step in factoring a trinomial of the form is to find two numbers, m and n, such that m + n = b and _____.

We know that when we factor polynomial of type ax^2+bx+c ,product of both numbers m and n must be same as product of a and c.

Hence correct choice is C). mn=ac

4 0
3 years ago
Help me with algebra
Keith_Richards [23]
20 because 70 divide by  = 35
8 0
3 years ago
Other questions:
  • The local deli sells cheese wheels. Each cheese wheel is a cylinder. The height of the cheese wheel is 2.8 inches and the volume
    12·2 answers
  • Identify the domain of the function shown in the graph
    10·2 answers
  • 1. 10 is the geometric mean between 2 and ?..​
    11·1 answer
  • 14. ABCD is a parallelogram. Find the values of x and y.
    9·1 answer
  • PLS HELP ASAP (THE PICTURE IS BELLOW)
    6·2 answers
  • What is the classification of the angle shown??
    6·1 answer
  • PLEASE HURRY Figure ABCD is transformed to figure A'B'C'D':
    6·1 answer
  • Aubree took a taxi from her house to the airport. The taxi company charged a pick-up
    8·1 answer
  • A bank charges 0.9 discount points on a loan of $377,200. What is the cost of the points?
    14·2 answers
  • Megan shaded 2/8 of the circle what is another way she could write this fraction
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!