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
son4ous [18]
3 years ago
12

How many different twotwo​-letter passwords can be formed from the letters

Mathematics
1 answer:
Anna [14]3 years ago
5 0

Answer:

70

Step-by-step explanation:

GIVEN: two two​-letter passwords can be formed from the letters  A, B, C, D, E, F, G and H.

TO FIND: How many different two two​-letter passwords can be formed if no repetition of letters is​ allowed.

SOLUTION:

Total number of different letters =8

for two two​-letter passwords 4 different are required.

Number of ways of selecting 4 different letters from 8 letters=^8C_4

                                                                                                   =\frac{8!}{4!4!}

                                                                                                  =70

Hence there are 70 different two-letter passwords can be formed using 8 letters.

You might be interested in
An archaeologist descends 22 feet into a canyon then climbs up 15 feet what is his final position
andrew-mc [135]
He's 7 feet into the canyon ( -7 ).
3 0
4 years ago
Find the volume of the square pyramid shown
Daniel [21]
C is the correct answer
5 0
3 years ago
DUE NOW
Llana [10]

Answer:

Relative frequencies

First row

0.8125 ,0.1875 ,16

Second row

0.555 ,0.444 ,9

third row

18 , 7 ,  25

Step-by-step explanation:

Given data

               allowance        No allowance          total

Chores         13                   3                          16

<u>No chores      5                   4                           9</u>

<u>Total              18                   7                            25</u>

<u><em>Relative frequencies</em></u>

               allowance          No allowance                  total

Chores         \frac{13}{16} = 0.8125     \frac{3}{16} = 0.1875                       16

No chores      \frac{5}{9} = 0.555      \frac{4}{9} = 0.444                            9

Total  <u>            18                   7                                   25</u>

3 0
3 years ago
Can't somebody help me math work please i need help
valentina_108 [34]

Answer:

TUP and PUQ

Step-by-step explanation:

Adjacent angles share a common vertex and common side, but don't overlap.

7 0
3 years ago
3/4-5/4m=113/24<br> please show work
bija089 [108]
May need to change into a mixed fraction

6 0
3 years ago
Other questions:
  • The equation y= -5.131x^2 +31.821x -3.333 approximates the number of people standing in line to catch a commuter train x hours a
    9·2 answers
  • Simplify this ratio: 100 blue marbles to 60 red marbles
    10·2 answers
  • I need help with these two please :’)
    9·1 answer
  • Geometry question, please help?
    14·1 answer
  • Answer two questions about Equations AAA and BBB: \begin{aligned} A.&amp;&amp;3(x+2)&amp;=18 \\\\ B.&amp;&amp;x+2&amp;=6 \end{al
    11·2 answers
  • ) As an ice cube melts its surface area is decreasing at a rate of 6cm2/sec. Find the rate at which the length of each side is d
    15·1 answer
  • At a furniture store, you can purchase 2 floor lamps and 3 table lamps for $360, or 2 floor lamps and 1 table lamp for $240. Wha
    14·2 answers
  • URGENT ANSWER LLEASE DUE IN 3 MINUTES!!!!!!!!!!!
    11·2 answers
  • What is the absolute value of -9.8 ?
    5·2 answers
  • The difference of 6 and the square of a number.<br><br> help plzz
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!