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
masha68 [24]
3 years ago
15

A hacker is trying to guess someone's password. the hacker knows (somehow) that the password is 12 characters long, and that eac

h character is either a lowercase letter, (a, b, c, etc), an uppercase letter (a, b, c, etc) or a numerical digit (0, 1, 2, 3, 4, 5, 6, 7, 8, or 9). assume that the hacker makes random guesses.
Mathematics
1 answer:
STALIN [3.7K]3 years ago
6 0
Determine first the places that will be filled:

26 + 26 + 10 = 62 ways

The number of possible passwords is limited to 12 characters
Thus,

= 62^12 (assume that repetition is allowed)

The probability of guessing correctly = 

(1/62)^12
= 3.099557704 x 10^-22 (note that it is in scientific notation form)
You might be interested in
Which term of the AP . 27, 24, 21, .... is zero?
dmitriy555 [2]

Answer: 27,24,21....

d=24-27=-3 a=27

let nth term=0

a+(n-1)d=0

27+(n-1)-3=0

(n-1)-3=-27

n-1=9

n=10

Step-by-step explanation:

3 0
3 years ago
The seventh term of an arithmetic sequence is 10.2 and the twelfth term is 17.7. What is the common difference of the arithmetic
marshall27 [118]
7 = 10.2
12 = 17.7
Let's take 
d = 17.7 - 10.2/ 12 - 7
d =  7.5/ 5
d = 1.5
The common difference is 1.5

 <span />
3 0
3 years ago
Read 2 more answers
Write the recursive formula for 16,23,30,37
4vir4ik [10]

Answer:

Arithmetic Sequence

Step-by-step explanation:

Arithmetic Sequence

4 0
3 years ago
Describe the transformation and identify the domain and range.
lara [203]

Answer:

the domain is the legal values of x, while the range is all the legale values of y

Step-by-step explanation:

5 0
3 years ago
Suppose we went to choose 2 letters without replacement from 3 letters a b and c
vagabundo [1.1K]

Answer:

6 ways -  ab,ac, ba,bc and ca,cb

Step-by-step explanation:

We are given 3 letters a,b,c.

We can choose the first letter in 1 out of 3 ways.

Once the first letter has been chosen without replacement, we have two letters remaining. Another letter can be chosen from the 2 remaining letters in  2 ways. So the total number of ways of choosing the two letters is 3*2 = 6.

Listing out the possible set of choices:

Options include: ab,ac, ba,bc and ca, cb

3 0
3 years ago
Other questions:
  • PLEASE HELP ME ANSWER THIS I WILL GIVE BRAINLIST!!!!!!!!!!!
    10·2 answers
  • Part of the analysis we routinely do with datasets is to identify whether or not any of the variables included are Binomial or P
    8·1 answer
  • which equation demonstrates the use of a simple interest formula, , to compute the interest earned on $70 at 3% for 12 years?
    14·1 answer
  • Factor the following question.
    5·1 answer
  • I need help on these please I really need help.<br> It's tomorrow.
    11·1 answer
  • Sonya goes into a newsagent's. She buys 3 items. They cost £1.25, 45p and £2.50. Sonya uses her calculator to check the total co
    10·1 answer
  • Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Points A and B
    15·2 answers
  • A cube has the width of 6 cm.What is the volume ofcthe cube?
    12·2 answers
  • HELP ASAP
    7·2 answers
  • What is the percent change from 147 to 298? Round your answer to the nearest tenth.​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!