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
Mice21 [21]
3 years ago
11

How many ways can a 4 digit password be formed?

Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0
We have 10 digits to choose 4 digits.
If repetition is allowed, we'd have 10 digits in the first slot, 10 digits in the second slot, and so on.
Hence, there are 10 000 ways to pick 4 digits.

Now, if repetition is not allowed, then we need to change the restrictions somehow.
If numbers cannot be repeated, then we can have 10 in the first slot, 9 in the second slot, 8 in the third slot, and 7 in the fourth slot, which makes 5040 ways.

If we want to understand this in permutations, then we have 10 objects to pick 4 different numbers, and so we can have 10P4 ways in forming a 4-digit password.
Alex_Xolod [135]3 years ago
3 0
<span> it can be solved in over 9000 ways possibility  </span>
You might be interested in
What’s the answer to f(a)
S_A_V [24]

Answer:

The answer to this is fa

Step-by-step explanation:

This is because you as the solver doesn't know what the variables f or a is so you put them together as multiplication until you do understand what f and a are so you can multiply them.

If you were to graph this it would be a horizontal line going infinite in both directions. That means no slope or y axis.

6 0
3 years ago
Find the measure of 0. (to the nearest tenth).<br> A) 36.9<br> B) 38.7<br> C) 51.3<br> D) 53.1
kupik [55]

Answer:

B) 38.7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
13 points!!! <br><br> 34ft 4in - 8=
vredina [299]
If feet:
34' 4" - 8' = 26' 4"

if inches: = 33' 8"

5 0
2 years ago
Read 2 more answers
Determine whether or not the distribution is a discrete probability distribution and select the reason why or why not. x −3 4 7
natta225 [31]

Answer:

The given probability distribution is a discrete probability distribution.

Step-by-step explanation:

We are given the following in the question:

       x:    3        4        7

P(X=x): 0.19    0.3    0.51

Property of discrete probability distribution:

\displaystyle\sum P(x_i) = 1

If the given probability distribution satisfies this property then, it is a discrete probability distribution.

\displaystyle\sum P(x_i)\\\\= 0.19+0.3+0.51 \\= 1

Thus, it satisfies the property for a discrete probability distribution.

Thus, the given probability distribution is a discrete probability distribution.

7 0
3 years ago
PLZ HURYY <br>THANK YOUU​
Sonja [21]

y = -19

I started by adding 18 to both sides(inverse operation) then dividing by -2 to isolate the variable. What you do to one side must be done to the other

8 0
2 years ago
Other questions:
  • Use the data to answer the following questions: 68, 63, 67, 66, 65, 87, 69, 61, 86, 82, 28
    10·1 answer
  • Absolute value of 5=|3×-2|
    11·2 answers
  • What is thirty-seven thousands in decimal
    15·1 answer
  • A carpenter had a piece of wood that was 7.28 feet long. He cut 2.9 feet off the
    7·1 answer
  • How do you round 8.656 to the nearest tenth
    13·2 answers
  • Solve -3x + 2y = 5 for y
    15·2 answers
  • Can someone please help me with 7-
    5·1 answer
  • Study the graph about immigration.
    13·1 answer
  • What is the rate of return on a $5,000 bond purchased at $4,750 with a 12% coupon?
    13·1 answer
  • Find m∠U.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!