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
cupoosta [38]
2 years ago
8

How many three​-digit numbers may be formed using elements from the set ​{1, 2, 3, 4, 5, 6, 7​} if no element may be used more t

han once in a number and the number must be​ even?
Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
3 0

Answer: 90

Step-by-step explanation:

set: ​{1, 2, 3, 4, 5, 6, 7​} = 7 numbers | 3 even

no element may be used more than once in a number = distinct elements

and the number must be​ even = must finish with a even number.

This way, we should start with the last number, which we have 3 possibilities.

Since we have 7 numbers in total, we have 6 options for the first one and then 5 options for the second one.

So, we have 6.5.3 = 90

You might be interested in
37 + 15r > or equal to 127, what is the answer?
Tpy6a [65]

Answer:

r ≥ 6

Step-by-step explanation:

37+15r ≥ 127

-37           -37          37 cancels and you're left with 15r

    15r ≥ 90

   / 15     /15           15 cancels and you're left with r

      r ≥ 6

4 0
2 years ago
Estimate each quotient tell <br> which method you used
cupoosta [38]
I would do 3+5 so then it equals 8
7 0
3 years ago
Which is the better buy?<br> 12 bars of soap for $10.00 or 5 bars of soap for $4.00
likoan [24]
5 Bars of soap for $4.00 Why? Because you if you buy two it cost $8.00 or buy three pack and you'll get 15 for $12.00
3 0
3 years ago
Read 2 more answers
Which of the following is equivalent to the equation below?
DerKrebs [107]
B is the correct answer R=Q-7s/4
6 0
3 years ago
Using the image, find the slope of the line. Reduce all fractions and enter using a forward slash (i.e. "/"). If the slope is un
dusya [7]

9514 1404 393

Answer:

  0

Step-by-step explanation:

The slope of a horizontal line is zero (0). For any finite "run", the "rise" is zero.

  slope = rise/run = 0/run = 0

8 0
2 years ago
Other questions:
  • The reciprocal of 1/6 is
    8·1 answer
  • How do you verify that a hexagon formed by A=(0,0), B=(2,1), C=(3,3), D=(2,5), E=(0,4) and F=(-1,2) is equiangular? (I already k
    5·1 answer
  • Find b and c so that (5,b,c) is orthogonal to both (1,2,3) and (1,-2,1)
    8·2 answers
  • How do you write down 6.24 divided by 2.4 showing work?
    8·1 answer
  • The batting Wang Xiu Ying uses to fill quilts has a thermal conductivity rate of 0.030.030, point, 03 watts (\text{W})(W)left pa
    14·1 answer
  • If &lt;10 and &lt;15 are congruent, which lines are parallel? A.lines b and c B.lines c and d C.lines a and b D.No lines are par
    12·1 answer
  • PLEASE HELP ASAP! Thanks!!!!! Explain:
    5·1 answer
  • I need the awnsers for questions 1-4 on “what happened to the parent function?”
    10·1 answer
  • I NEED HELP LIKE ASAP ​
    6·1 answer
  • Recipe calls for a total of 3 and two-thirdscups flour and sugar. If the recipe calls for One-fourthcup of sugar, how much flour
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!