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
kotegsom [21]
2 years ago
13

Suppose you are to select a password of size 4. The first character should be any lowercase letter or a digit, while the second

should be a non-zero digit. The third should be any lower case letter, and the fourth should be any lowercase letter, which is different from the third. b. Consider a group of ten students, and six of them are boys. A committee of 3 students is expected to select from the above group. How many committees can you select with at least two girls
Mathematics
1 answer:
Goshia [24]2 years ago
3 0

First question seems incomplete :

Answer:

40 ways

Step-by-step explanation:

Question B:

Number of boys = 6

Number of girls = 4

Number of people in committee = 3

Number of ways of selecting committee with atleast 2 girls :

We either have :

(2 girls 1 boy) or (3girls 0 boy)

(4C2 * 6C1) + (4C3 * 6C0)

nCr = n! ÷ (n-r)!r!

4C2 = 4! ÷ 2!2! = 6

6C1 = 6! ÷ 5!1! = 6

4C3 = 4! ÷ 1!3! = 4

6C0 = 6! ÷ 6!0! = 1

(6 * 6) + (4 * 1)

36 + 4

= 40 ways

You might be interested in
In Chicago, Illinois, the temperature was -14°F in the morning. If the
Rom4ik [11]

Answer:

-20° F

Step-by-step explanation:

the temperature would be :

=》-14 - 6 = -20° F

7 0
2 years ago
Read 2 more answers
What is the negative exponent of 1 / 49
jekas [21]
I think 1 / 7 x 7 is the correct answer
6 0
3 years ago
What is the sum of 2 10/12 + 3 3/12
aliina [53]
6 1/12 am I right? I'm pretty sure I'm right
7 0
2 years ago
Read 2 more answers
Suppose that X ∼ Geom(p) and Y ∼ Geom(r) are independent. Find the probability P (X < Y ).
Murrr4er [49]

X,Y have joint density

f_{X,Y}(x,y)=f_X(x)f_Y(y)=\begin{cases}pr(1-p)^x(1-r)^y&\text{for }x\ge0,y\ge0\\0&\text{otherwise}\end{cases}

We can find P(X by integrating the joint density over the region in \Bbb R^2 where x in the first quadrant, i.e. above the line y=x:P(X

using the fact that

a^n=e^{n\ln a}\implies\displaystyle\int a^n\,\mathrm dn=\frac1{\ln a}e^{n\ln a}+C=\frac1{\ln a}a^n+C

Then using the same property,

P(X

4 0
3 years ago
When you roll a die the probability of rolling a number less than 3 is 2/6.
Lilit [14]
2/6 I hope this answers your question

3 0
3 years ago
Other questions:
  • What is the next term in the following constant velocity sequence? 10cm, 17cm, 24cm, ...
    12·1 answer
  • Laurie is moving a dresser with a mass of 250 kg. She does 126 J of work with a force of 14 N. How far does she move the dresser
    11·1 answer
  • Pythagorean theorem Find x.
    7·2 answers
  • Please show ur work
    6·1 answer
  • WHAT IS π/1? <br> ................................
    5·1 answer
  • You want to buy some beans. An 8-ounce package costs $2.64. A 12-ounce package costs $3.84. A 26-ounce package costs $8.06. Whic
    12·1 answer
  • USLUIT il<br> Find x.<br> 45°<br> 30°
    8·1 answer
  • Kelly wants to buy a pair of pants that regularly cost $29.99, but they are on sale for 20% off. How much would Kelly pay for th
    8·1 answer
  • NEED HELP ASAP PLZZZZ
    9·2 answers
  • Write 3.274 x 10^3 helppppppp meeeee
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!