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
ser-zykov [4K]
3 years ago
14

How many sets of 7 questions can be chosen from a file of 25 questions?

Mathematics
1 answer:
likoan [24]3 years ago
3 0
If all 25 questions are different,

When order of selection counts:
P(25,7)
=25!/(25-7)!
=15511210043330985984000000/6402373705728000
=2422728000

When order of selection does not count count:
C(25,7)
=25!/(7!*(25-7)!)
=15511210043330985984000000/(6402373705728000*5040)
=480700

You might be interested in
What is the midpoint of the segment shown below (-11,0) (9,-1)
marissa [1.9K]

Answer:

(-1, -1/2)

Step-by-step explanation:

M= (Xa+Xb/2, Ya + Yb/2)


M= -11+9/2  ,  0 + -1/2

M = -2/2, -1/2

M=(-1, -1/2)

6 0
2 years ago
Read 2 more answers
Find the 5th (not fourth) of given geometric sequence. 2000, 1000, 500,...
Greeley [361]

Answer:

125

Step-by-step explanation:

To find the common ratio, take the second term and divide by the first term

1000/2000 = 1/2

We multiply each term by 1/2

2000, 1000, 500

To find the next term 500*1/2 = 500/2 = 250

To find the 5th term

250*1/2 = 125

8 0
3 years ago
ANSWER NEEDED QUICKLY‼️ BRAINLIEST TO RIGHT ANSWER
liq [111]
I’m pretty sure the answer is B
(Hope this helps!!) Can I pls have brainliest??
6 0
3 years ago
Find the domain of the function f(x)=2/3x+3 . The given range is -3,0,5,9. A.1,3,19/3,9 b.-4,-2,4/3,4 c.-9,9/2,,3,9 d.0,9/2,12,1
algol13

Answer:

I believe it is C?

Step-by-step explanation:

6 0
3 years ago
Lydia is a project manager and submitted proposals for two different projects, Project X and Project Y to her boss. The probabil
mixer [17]

Answer:

b. False

Step-by-step explanation:

P(X & Y) = 0.77 + 0.65 - 0.9 = 0.52

P(X) × P(Y) = 0.65×0.77 = 0.5004

Since P(X&Y) and P(X)×P(Y) are not equal, they are not independent

5 0
3 years ago
Other questions:
  • Find and interpret the slope and y-intercept of y=40x+30
    7·1 answer
  • What expression represents the measure of angle x?
    7·1 answer
  • Find g(x)-f(x). g(x)=x^2+1 and f(x)=2x+5
    12·1 answer
  • What is 65 percent of 78?​
    13·2 answers
  • Don,Eric, and Finn line up in random order for the cafeteria line. What is the probability that they will line up from front to
    6·2 answers
  • Last year there were 1,435 8th grade students enrolled at your sc hool. This year there are 1,220. What is the percent change in
    12·1 answer
  • Help pls OOOFFIES AND ASAP
    12·1 answer
  • What's is 3000000+3000000000
    14·2 answers
  • A house that is 30 feet tall casts a shadow that is 50 feet long. A nearby tree casts a shadow that is 75 feet long. HOW LONG IS
    13·1 answer
  • I need help like right now I have no idea what I’m looking at
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!